{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T09:17:54Z","timestamp":1740129474432,"version":"3.37.3"},"reference-count":134,"publisher":"IOP Publishing","issue":"2","license":[{"start":{"date-parts":[[1975,3,1]],"date-time":"1975-03-01T00:00:00Z","timestamp":162864000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/page\/copyright"},{"start":{"date-parts":[[1975,3,1]],"date-time":"1975-03-01T00:00:00Z","timestamp":162864000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["pmb"],"published-print":{"date-parts":[[1975,3,1]]},"DOI":"10.1088\/0031-9155\/20\/2\/001","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T22:02:53Z","timestamp":1027720973000},"page":"181-201","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Physical methods of investigating the foetus"],"prefix":"10.1088","volume":"20","author":[{"family":"M F Docker","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"266","reference":[{"key":"d2e227","doi-asserted-by":"publisher","first-page":"335","DOI":"10.1016\/S0002-9378(15)31290-4","volume":"116","year":"1973","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e248","doi-asserted-by":"publisher","first-page":"523","DOI":"10.1136\/bmj.3.5721.523-c","volume":"3","year":"1970","journal-title":"Br. J. Hosp. Med.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1064","issn-type":"print"},{"key":"d2e268","doi-asserted-by":"publisher","first-page":"802","DOI":"10.1111\/j.1471-0528.1938.tb11169.x","volume":"45","year":"1938","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e287","doi-asserted-by":"publisher","first-page":"556","DOI":"10.1016\/0002-9378(68)90538-3","volume":"102","year":"1968","journal-title":"Am. J. Obstet. Gynec."},{"year":"1961","key":"d2e308"},{"key":"d2e320","doi-asserted-by":"publisher","first-page":"623","DOI":"10.1016\/0002-9378(55)90357-4","volume":"70","year":"1955","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e341","doi-asserted-by":"publisher","first-page":"193","DOI":"10.1259\/0007-1285-45-531-193","volume":"45","year":"1972","journal-title":"Br. J. Radiol.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1285","issn-type":"print"},{"key":"d2e364","doi-asserted-by":"publisher","first-page":"35","DOI":"10.1016\/0002-8703(47)90457-2","volume":"34","year":"1947","journal-title":"Am. Heart J.","ISSN":"https:\/\/id.crossref.org\/issn\/0002-8703","issn-type":"print"},{"key":"d2e387","doi-asserted-by":"publisher","first-page":"5","DOI":"10.1677\/joe.0.0420005","volume":"42","year":"1968","journal-title":"J. Endocr."},{"key":"d2e406","doi-asserted-by":"publisher","first-page":"116","DOI":"10.1111\/j.1471-0528.1973.tb02165.x","volume":"80","year":"1973","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e425","doi-asserted-by":"publisher","first-page":"442","DOI":"10.1136\/pgmj.28.322.442","volume":"28","year":"1952","journal-title":"Post-grad. Med. J."},{"year":"1969","key":"d2e445"},{"year":"1966","key":"d2e456","first-page":"7"},{"key":"d2e469","first-page":"637","volume":"23","year":"1964","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e485","doi-asserted-by":"publisher","first-page":"340","DOI":"10.1016\/S0002-9378(15)31291-6","volume":"116","year":"1973","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e506","doi-asserted-by":"publisher","first-page":"568","DOI":"10.1111\/j.1471-0528.1968.tb00161.x","volume":"75","year":"1968","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e525","doi-asserted-by":"publisher","first-page":"101","DOI":"10.1016\/S0140-6736(70)90461-7","volume":"295","year":"1970","journal-title":"Lancet","ISSN":"https:\/\/id.crossref.org\/issn\/0140-6736","issn-type":"print"},{"key":"d2e549","doi-asserted-by":"publisher","first-page":"513","DOI":"10.1111\/j.1471-0528.1971.tb00309.x","volume":"78","year":"1971","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e568","doi-asserted-by":"publisher","first-page":"525","DOI":"10.1016\/0002-9378(63)90564-7","volume":"87","year":"1963","journal-title":"Am. J. Obstet Gynec."},{"key":"d2e589","doi-asserted-by":"publisher","first-page":"23","DOI":"10.1111\/j.1469-1809.1963.tb00777.x","volume":"27","year":"1963","journal-title":"Ann. Hum. Genet.","ISSN":"https:\/\/id.crossref.org\/issn\/0003-4800","issn-type":"print"},{"year":"1971","key":"d2e612"},{"key":"d2e623","doi-asserted-by":"publisher","first-page":"328","DOI":"10.1259\/0007-1285-45-533-328","volume":"45","year":"1972","journal-title":"Br. J. Radiol.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1285","issn-type":"print"},{"key":"d2e646","doi-asserted-by":"publisher","first-page":"320","DOI":"10.1016\/0002-9378(67)90151-2","volume":"98","year":"1967","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e668","doi-asserted-by":"publisher","first-page":"148","DOI":"10.1093\/bja\/45.2.148","volume":"45","year":"1973","journal-title":"Br. J. Anaesth.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-0912","issn-type":"print"},{"key":"d2e691","first-page":"881","volume":"17","year":"1906","journal-title":"M\u00fcnch. Med. Wschr."},{"key":"d2e708","doi-asserted-by":"publisher","first-page":"1136","DOI":"10.1016\/0002-9378(68)90364-5","volume":"101","year":"1968","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e729","doi-asserted-by":"publisher","first-page":"310","DOI":"10.1016\/0002-9378(70)90280-2","volume":"106","year":"1970","journal-title":"Am. J. Obstet Gynec."},{"key":"d2e750","doi-asserted-by":"publisher","first-page":"392","DOI":"10.1136\/pgmj.46.536.392","volume":"46","year":"1970","journal-title":"Post-grad. Med. J."},{"volume":"vol 26","first-page":"230","year":"1970","key":"d2e769"},{"key":"d2e786","doi-asserted-by":"publisher","first-page":"769","DOI":"10.1111\/j.1471-0528.1973.tb11217.x","volume":"80","year":"1973","journal-title":"J. Obstet Gynaec. Br. Commonw."},{"year":"1971","key":"d2e805","first-page":"17"},{"key":"d2e818","doi-asserted-by":"publisher","first-page":"609","DOI":"10.1016\/0002-9378(69)90559-6","volume":"103","year":"1969","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e839","doi-asserted-by":"publisher","first-page":"993","DOI":"10.1111\/j.1471-0528.1968.tb02871.x","volume":"75","year":"1968","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e858","doi-asserted-by":"publisher","first-page":"1188","DOI":"10.1016\/S0140-6736(58)91905-6","volume":"271","year":"1958","journal-title":"Lancet","ISSN":"https:\/\/id.crossref.org\/issn\/0140-6736","issn-type":"print"},{"key":"d2e881","doi-asserted-by":"publisher","first-page":"304","DOI":"10.1111\/j.1471-0528.1972.tb15801.x","volume":"79","year":"1972","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e901","doi-asserted-by":"publisher","first-page":"529","DOI":"10.1111\/j.1471-0528.1958.tb08555.x","volume":"65","year":"1958","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e920","doi-asserted-by":"publisher","first-page":"240","DOI":"10.1016\/0041-624X(68)90134-0","volume":"6","year":"1968","journal-title":"Ultrasonics","ISSN":"https:\/\/id.crossref.org\/issn\/0041-624X","issn-type":"print"},{"key":"d2e943","doi-asserted-by":"publisher","first-page":"644","DOI":"10.1016\/0002-9378(71)90966-5","volume":"111","year":"1971","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e964","doi-asserted-by":"publisher","first-page":"1160","DOI":"10.1016\/0002-9378(69)90523-7","volume":"103","year":"1969","journal-title":"Am. J. Obstet. Gynec."},{"year":"1969","key":"d2e985"},{"key":"d2e996","doi-asserted-by":"publisher","first-page":"722","DOI":"10.1016\/0002-9378(67)90420-6","volume":"99","year":"1967","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1018","doi-asserted-by":"publisher","first-page":"94","DOI":"10.1038\/scientificamerican0267-94","volume":"216","year":"1967","journal-title":"Sci. Am.","ISSN":"https:\/\/id.crossref.org\/issn\/0036-8733","issn-type":"print"},{"key":"d2e1040","doi-asserted-by":"publisher","first-page":"251","DOI":"10.1111\/j.1471-0528.1956.tb05476.x","volume":"63","year":"1956","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e1059","doi-asserted-by":"publisher","first-page":"159","DOI":"10.1007\/BF02474158","volume":"4","year":"1966","journal-title":"Med. Biol. Engng","ISSN":"https:\/\/id.crossref.org\/issn\/0025-696X","issn-type":"print"},{"year":"1971","key":"d2e1080","first-page":"73"},{"key":"d2e1093","first-page":"248","volume":"12","year":"1964","journal-title":"J. Albert Einstein Med. Cent."},{"year":"1966","key":"d2e1109"},{"year":"1969","key":"d2e1121"},{"key":"d2e1132","doi-asserted-by":"publisher","first-page":"790","DOI":"10.1111\/j.1471-0528.1969.tb06179.x","volume":"76","year":"1969","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e1151","doi-asserted-by":"publisher","first-page":"576","DOI":"10.1136\/bmj.3.5722.576","volume":"3","year":"1970","journal-title":"Br. J. Hosp. Med.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1064","issn-type":"print"},{"key":"d2e1171","doi-asserted-by":"publisher","first-page":"481","DOI":"10.1111\/j.1471-0528.1961.tb02758.x","volume":"68","year":"1961","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e1190","doi-asserted-by":"publisher","first-page":"561","DOI":"10.1259\/0007-1285-41-488-561","volume":"41","year":"1968","journal-title":"Br. J. Radiol.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1285","issn-type":"print"},{"key":"d2e1213","first-page":"556","volume":"102","year":"1963","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1231","first-page":"281","volume":"30","year":"1967","journal-title":"Obstet. Gynec., N.Y."},{"year":"1968","key":"d2e1248"},{"year":"1968","key":"d2e1259"},{"key":"d2e1270","doi-asserted-by":"publisher","first-page":"553","DOI":"10.1126\/science.125.3247.553","volume":"125","year":"1957","journal-title":"Science, N.Y."},{"key":"d2e1289","first-page":"219","volume":"33","year":"1969","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e1306","first-page":"237","volume":"33","year":"1969","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e1324","doi-asserted-by":"publisher","first-page":"361","DOI":"10.1016\/S0002-9378(16)36378-5","volume":"81","year":"1961","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1345","doi-asserted-by":"publisher","first-page":"144","DOI":"10.1111\/j.1471-0528.1969.tb05809.x","volume":"76","year":"1969","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"year":"1966","key":"d2e1364"},{"year":"1972","key":"d2e1375"},{"key":"d2e1386","doi-asserted-by":"publisher","first-page":"553","DOI":"10.1016\/0002-9378(67)90569-8","volume":"97","year":"1967","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1407","doi-asserted-by":"publisher","first-page":"117","DOI":"10.1111\/j.1479-828X.1972.tb00807.x","volume":"12","year":"1972","journal-title":"Aust. N.Z. J. Obstet. Gynec.","ISSN":"https:\/\/id.crossref.org\/issn\/0004-8666","issn-type":"print"},{"key":"d2e1429","doi-asserted-by":"publisher","first-page":"1190","DOI":"10.1016\/S0002-9378(16)34294-6","volume":"104","year":"1969","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1450","doi-asserted-by":"publisher","first-page":"1622","DOI":"10.1016\/0002-9378(62)90180-1","volume":"83","year":"1962","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1471","doi-asserted-by":"publisher","first-page":"1109","DOI":"10.1016\/0002-9378(59)90054-7","volume":"77","year":"1959","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1492","doi-asserted-by":"publisher","first-page":"1143","DOI":"10.1016\/0002-9378(60)90081-8","volume":"80","year":"1960","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1513","doi-asserted-by":"publisher","first-page":"1217","DOI":"10.1001\/jama.1960.03020290043009","volume":"173","year":"1960","journal-title":"J. Am. Med. Ass."},{"year":"1961","key":"d2e1532"},{"key":"d2e1544","doi-asserted-by":"publisher","first-page":"1893","DOI":"10.1016\/0002-9378(62)90480-5","volume":"84","year":"1962","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1563","doi-asserted-by":"publisher","first-page":"975","DOI":"10.1016\/0002-9378(65)90158-4","volume":"93","year":"1965","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1584","doi-asserted-by":"publisher","first-page":"1135","DOI":"10.1016\/S0002-9378(15)33415-3","volume":"100","year":"1968","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1605","doi-asserted-by":"publisher","first-page":"282","DOI":"10.1016\/S0002-9378(16)34402-7","volume":"103","year":"1969","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1626","doi-asserted-by":"publisher","first-page":"1140","DOI":"10.1016\/S0002-9378(15)33098-2","volume":"92","year":"1965","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1647","doi-asserted-by":"publisher","first-page":"186","DOI":"10.2214\/ajr.103.1.186","volume":"103","year":"1968","journal-title":"Am. J. Roentg."},{"key":"d2e1669","doi-asserted-by":"publisher","first-page":"1359","DOI":"10.1016\/S0002-9378(16)36265-2","volume":"82","year":"1961","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1690","doi-asserted-by":"publisher","first-page":"412","DOI":"10.2307\/1417473","volume":"55","year":"1942","journal-title":"Am. J. Psychol.","ISSN":"https:\/\/id.crossref.org\/issn\/0002-9556","issn-type":"print"},{"key":"d2e1711","doi-asserted-by":"publisher","first-page":"92","DOI":"10.1136\/bmj.4.5727.92","volume":"4","year":"1970","journal-title":"Br. Med. J.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1447","issn-type":"print"},{"key":"d2e1733","first-page":"936","volume":"5","year":"1964","journal-title":"J. Nucl. Med.","ISSN":"https:\/\/id.crossref.org\/issn\/0161-5505","issn-type":"print"},{"key":"d2e1753","doi-asserted-by":"crossref","first-page":"898","DOI":"10.1016\/0002-9378(72)90094-4","volume":"114","year":"1972","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1774","doi-asserted-by":"publisher","first-page":"655","DOI":"10.1152\/jappl.1959.14.4.655","volume":"14","year":"1959","journal-title":"J. Appl. Physiol.","ISSN":"https:\/\/id.crossref.org\/issn\/0161-7567","issn-type":"print"},{"key":"d2e1795","doi-asserted-by":"publisher","first-page":"972","DOI":"10.1016\/S0140-6736(62)92009-3","volume":"279","year":"1962","journal-title":"Lancet","ISSN":"https:\/\/id.crossref.org\/issn\/0140-6736","issn-type":"print"},{"key":"d2e1816","first-page":"327","volume":"30","year":"1967","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e1833","doi-asserted-by":"crossref","first-page":"912","DOI":"10.1542\/peds.42.6.912","volume":"42","year":"1968","journal-title":"Pediatrics"},{"volume":"7","first-page":"5","year":"1970","key":"d2e1852"},{"key":"d2e1866","first-page":"284","volume":"79","year":"1965","journal-title":"Archs Path."},{"key":"d2e1883","doi-asserted-by":"publisher","first-page":"390","DOI":"10.1111\/j.1471-0528.1970.tb03540.x","volume":"77","year":"1970","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e1903","first-page":"33","volume":"21","year":"1963","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e1920","doi-asserted-by":"publisher","first-page":"957","DOI":"10.1016\/S0002-9378(16)33843-1","volume":"116","year":"1973","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e1941","first-page":"509","volume":"3","year":"1970","journal-title":"Br. J. Hosp. Med.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1064","issn-type":"print"},{"key":"d2e1959","doi-asserted-by":"publisher","first-page":"1054","DOI":"10.1111\/j.1471-0528.1973.tb02979.x","volume":"80","year":"1973","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e1978","doi-asserted-by":"publisher","first-page":"489","DOI":"10.1177\/003591573502800504","volume":"28","year":"1935","journal-title":"Proc. Roy. Soc. Med."},{"key":"d2e1999","first-page":"235","volume":"46","year":"1973","journal-title":"Br. J. Radiol.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1285","issn-type":"print"},{"year":"1973","key":"d2e2018"},{"key":"d2e2029","first-page":"631","volume":"51","year":"1944","journal-title":"Am. J. Roentg."},{"key":"d2e2046","first-page":"740","volume":"26","year":"1965","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e2063","doi-asserted-by":"publisher","first-page":"1057","DOI":"10.1016\/0002-9378(69)90703-0","volume":"104","year":"1969","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e2084","first-page":"132","volume":"36","year":"1970","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e2101","doi-asserted-by":"publisher","first-page":"649","DOI":"10.1111\/j.1471-0528.1957.tb08454.x","volume":"64","year":"1957","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2121","doi-asserted-by":"publisher","first-page":"208","DOI":"10.1111\/j.1471-0528.1969.tb05823.x","volume":"76","year":"1969","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"year":"1973","key":"d2e2140"},{"key":"d2e2151","doi-asserted-by":"publisher","first-page":"497","DOI":"10.1111\/j.1471-0528.1969.tb05869.x","volume":"76","year":"1969","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2170","first-page":"262","volume":"161","year":"1964","journal-title":"Z. Geburtsh. Gyn\u00e4k."},{"year":"1965","key":"d2e2187"},{"key":"d2e2198","doi-asserted-by":"publisher","first-page":"1120","DOI":"10.1016\/0002-9378(68)90358-X","volume":"101","year":"1968","journal-title":"Am. J. Obstet. Gynec."},{"year":"1973","key":"d2e2220"},{"year":"1971","key":"d2e2231","first-page":"302"},{"key":"d2e2244","first-page":"597","volume":"105","year":"1969","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e2263","doi-asserted-by":"publisher","first-page":"694","DOI":"10.1111\/j.1471-0528.1971.tb01631.x","volume":"78","year":"1971","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2282","doi-asserted-by":"publisher","first-page":"1077","DOI":"10.1016\/S0140-6736(59)90656-7","volume":"273","year":"1959","journal-title":"Lancet","ISSN":"https:\/\/id.crossref.org\/issn\/0140-6736","issn-type":"print"},{"key":"d2e2304","doi-asserted-by":"publisher","first-page":"1124","DOI":"10.1016\/S0140-6736(53)92309-5","volume":"261","year":"1953","journal-title":"Lancet","ISSN":"https:\/\/id.crossref.org\/issn\/0140-6736","issn-type":"print"},{"key":"d2e2326","doi-asserted-by":"publisher","first-page":"59","DOI":"10.1111\/j.1471-0528.1957.tb02599.x","volume":"64","year":"1957","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2345","first-page":"754","volume":"34","year":"1922","journal-title":"Surgery Gynec. Obstet."},{"key":"d2e2362","doi-asserted-by":"publisher","first-page":"894","DOI":"10.1111\/j.1471-0528.1971.tb00200.x","volume":"78","year":"1971","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2381","doi-asserted-by":"publisher","first-page":"383","DOI":"10.1016\/S0140-6736(66)91387-0","volume":"287","year":"1966","journal-title":"Lancet","ISSN":"https:\/\/id.crossref.org\/issn\/0140-6736","issn-type":"print"},{"key":"d2e2404","first-page":"62","volume":"25","year":"1967","journal-title":"Nucleonics","ISSN":"https:\/\/id.crossref.org\/issn\/0096-6207","issn-type":"print"},{"key":"d2e2422","first-page":"68","volume":"25","year":"1967","journal-title":"Nucleonics","ISSN":"https:\/\/id.crossref.org\/issn\/0096-6207","issn-type":"print"},{"key":"d2e2440","doi-asserted-by":"publisher","first-page":"104","DOI":"10.1016\/S0140-6736(68)92719-0","volume":"291","year":"1968","journal-title":"Lancet","ISSN":"https:\/\/id.crossref.org\/issn\/0140-6736","issn-type":"print"},{"key":"d2e2463","first-page":"1033","volume":"69","year":"1962","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2480","doi-asserted-by":"publisher","first-page":"416","DOI":"10.1111\/j.1471-0528.1972.tb14179.x","volume":"79","year":"1972","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2499","doi-asserted-by":"publisher","first-page":"390","DOI":"10.1136\/bmj.4.5576.390","volume":"4","year":"1967","journal-title":"Br. Med. J.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1447","issn-type":"print"},{"key":"d2e2521","first-page":"351","volume":"41","year":"1973","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e2538","doi-asserted-by":"publisher","first-page":"64","DOI":"10.1016\/S0002-8703(42)90423-X","volume":"23","year":"1942","journal-title":"Am. Heart J.","ISSN":"https:\/\/id.crossref.org\/issn\/0002-8703","issn-type":"print"},{"key":"d2e2560","doi-asserted-by":"publisher","first-page":"56","DOI":"10.1016\/0002-9378(67)90132-9","volume":"98","year":"1967","journal-title":"Am. J. Obstet. Gynec."},{"year":"1969","key":"d2e2581"},{"year":"1971","key":"d2e2592"},{"key":"d2e2603","doi-asserted-by":"publisher","first-page":"11","DOI":"10.1111\/j.1471-0528.1964.tb04236.x","volume":"71","year":"1964","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2622","doi-asserted-by":"publisher","first-page":"139","DOI":"10.1111\/j.1471-0528.1970.tb03492.x","volume":"77","year":"1970","journal-title":"J. Obstet. Gynaec. Br. Commonw."},{"key":"d2e2641","doi-asserted-by":"publisher","first-page":"97","DOI":"10.1016\/0003-2697(62)90099-4","volume":"3","year":"1962","journal-title":"Analyt. Biochem.","ISSN":"https:\/\/id.crossref.org\/issn\/0003-2697","issn-type":"print"},{"key":"d2e2665","doi-asserted-by":"publisher","first-page":"890","DOI":"10.1016\/0002-9378(72)90093-2","volume":"114","year":"1972","journal-title":"Am. J. Obstet. Gynec."},{"key":"d2e2686","first-page":"355","volume":"41","year":"1973","journal-title":"Obstet. Gynec., N.Y."},{"key":"d2e2703","first-page":"978","volume":"2","year":"1964","journal-title":"Br. Med. J.","ISSN":"https:\/\/id.crossref.org\/issn\/0007-1447","issn-type":"print"}],"container-title":["Physics in Medicine &amp; Biology"],"original-title":[],"link":[{"URL":"https:\/\/iopscience.iop.org\/article\/10.1088\/0031-9155\/20\/2\/001","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1088\/0031-9155\/20\/2\/001\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1088\/0031-9155\/20\/2\/001\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/iopscience.iop.org\/article\/10.1088\/0031-9155\/20\/2\/001\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,11]],"date-time":"2023-12-11T13:27:40Z","timestamp":1702301260000},"score":1,"resource":{"primary":{"URL":"https:\/\/iopscience.iop.org\/article\/10.1088\/0031-9155\/20\/2\/001"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1975,3,1]]},"references-count":134,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1975,3,1]]}},"URL":"https:\/\/doi.org\/10.1088\/0031-9155\/20\/2\/001","relation":{},"ISSN":["0031-9155","1361-6560"],"issn-type":[{"type":"print","value":"0031-9155"},{"type":"electronic","value":"1361-6560"}],"subject":[],"published":{"date-parts":[[1975,3,1]]},"assertion":[{"value":"Physical methods of investigating the foetus","name":"article_title","label":"Article Title"},{"value":"Physics in Medicine & Biology","name":"journal_title","label":"Journal Title"},{"value":"paper","name":"article_type","label":"Article Type"},{"value":"Published under licence by IOP Publishing Ltd","name":"copyright_information","label":"Copyright Information"}]}}