{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T02:54:54Z","timestamp":1777863294999,"version":"3.51.4"},"reference-count":25,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[1953,2,1]],"date-time":"1953-02-01T00:00:00Z","timestamp":-533779200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Proceedings of the Royal Society of Medicine"],"published-print":{"date-parts":[[1953,2]]},"DOI":"10.1177\/003591575304600206","type":"journal-article","created":{"date-parts":[[2019,7,19]],"date-time":"2019-07-19T02:22:15Z","timestamp":1563502935000},"page":"85-91","source":"Crossref","is-referenced-by-count":9,"title":["The Amplification and Recording of F\u0153tal Heart Sounds [\n                    <i>Abridged<\/i>\n                    ]"],"prefix":"10.1177","volume":"46","author":[{"given":"Alistair L.","family":"Gunn","sequence":"first","affiliation":[{"name":"Maternity Department, Lewisham Hospital, London"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael C.","family":"Wood","sequence":"additional","affiliation":[{"name":"Maternity Department, Lewisham Hospital, London"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,9]]},"reference":[{"key":"bibr-bibr1-003591575304600206","first-page":"200","volume":"21","author":"Abbott R. B.","year":"1923","journal-title":"Phys. Rev."},{"key":"bibr-bibr2-003591575304600206","doi-asserted-by":"crossref","first-page":"802","DOI":"10.1111\/j.1471-0528.1938.tb11169.x","volume":"45","author":"Bell G. H.","year":"1938","journal-title":"J. Obstet. Gyn\u0153c., Brit. Emp."},{"key":"bibr-bibr3-003591575304600206","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/S0002-9378(42)91327-9","volume":"43","author":"Bernstein P.","year":"1942","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr4-003591575304600206","doi-asserted-by":"crossref","first-page":"628","DOI":"10.1001\/jama.1935.02760080024006","volume":"104","author":"Bierring W. L.","year":"1935","journal-title":"J. Amer. med. Ass."},{"key":"bibr-bibr5-003591575304600206","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1016\/0002-8703(47)90457-2","volume":"34","author":"Blondheim S. H.","year":"1947","journal-title":"Amer. Heart J."},{"key":"bibr-bibr6-003591575304600206","first-page":"684","volume":"11","author":"Cioslowski T.","year":"1932","journal-title":"Ginek. Polska"},{"key":"bibr-bibr7-003591575304600206","doi-asserted-by":"crossref","first-page":"2008","DOI":"10.1001\/jama.1938.72790480006009c","volume":"111","author":"De Costa E. J.","year":"1938","journal-title":"J. Amer. med. Ass."},{"key":"bibr-bibr8-003591575304600206","doi-asserted-by":"crossref","first-page":"775","DOI":"10.1016\/S0002-9378(41)90865-7","volume":"41","author":"Dressler M.","year":"1941","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr9-003591575304600206","first-page":"456","volume":"45","author":"Dunn H. G.","year":"1952","journal-title":"Proc. R. Soc. Med."},{"key":"bibr-bibr10-003591575304600206","doi-asserted-by":"crossref","first-page":"1683","DOI":"10.1001\/jama.1923.02650200033012","volume":"81","author":"Falls F. H.","year":"1923","journal-title":"J. Amer. med. Ass."},{"key":"bibr-bibr11-003591575304600206","first-page":"161","volume":"14","author":"Frankenhauser F.","year":"1859","journal-title":"Mschr. Geburtsk. Frauenkrank."},{"key":"bibr-bibr12-003591575304600206","doi-asserted-by":"crossref","first-page":"531","DOI":"10.1002\/j.1538-7305.1924.tb00939.x","volume":"3","author":"Frederick H. A.","year":"1924","journal-title":"Bell Syst. tech. J."},{"key":"bibr-bibr13-003591575304600206","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1016\/S0002-9378(30)90056-7","volume":"20","author":"Hyman A. S.","year":"1930","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr18-003591575304600206","first-page":"192","volume":"1","author":"McClintock A. H.","year":"1876","journal-title":"Smellie's Midwifery"},{"key":"bibr-bibr19-003591575304600206","doi-asserted-by":"crossref","first-page":"898","DOI":"10.1016\/S0002-9378(37)90735-X","volume":"34","author":"Matthews H. B.","year":"1937","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr20-003591575304600206","first-page":"249","volume":"9","author":"Mayor F. I.","year":"1818","journal-title":"Bibl. univers. Sci., etc., Geneva."},{"key":"bibr-bibr21-003591575304600206","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1016\/S0002-9378(15)32474-1","volume":"48","author":"Paley S. S.","year":"1944","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr22-003591575304600206","first-page":"304","volume":"6","author":"Phelippeaux","year":"1879","journal-title":"Arch. Tocol., etc. Paris"},{"key":"bibr-bibr23-003591575304600206","doi-asserted-by":"crossref","first-page":"851","DOI":"10.1016\/S0002-9378(15)31661-6","volume":"35","author":"Pommerenke W. T.","year":"1938","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr24-003591575304600206","doi-asserted-by":"crossref","first-page":"717","DOI":"10.1016\/S0002-8703(26)90434-1","volume":"1","author":"Sampson J. J.","year":"1926","journal-title":"Amer. Heart J."},{"key":"bibr-bibr25-003591575304600206","first-page":"549","volume":"58","author":"Smith A. L.","year":"1941","journal-title":"Arch. Pediat."},{"key":"bibr-bibr26-003591575304600206","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1016\/S0002-9378(40)91123-1","volume":"40","author":"Hervert A. B.","year":"1940","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr27-003591575304600206","first-page":"465","volume":"124","author":"Squier G. O.","year":"1921","journal-title":"Sci. Amer."},{"key":"bibr-bibr28-003591575304600206","doi-asserted-by":"crossref","first-page":"986","DOI":"10.1016\/S0002-9378(38)90640-4","volume":"36","author":"Strassmann E. O.","year":"1938","journal-title":"Amer. J. Obstet. Gynec."},{"key":"bibr-bibr29-003591575304600206","first-page":"7","volume":"1","author":"Weiss O.","year":"1909","journal-title":"Samml. Anat. Physiol. Vortr."}],"container-title":["Proceedings of the Royal Society of Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/003591575304600206","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/003591575304600206","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T05:23:28Z","timestamp":1777526608000},"score":1,"resource":{"primary":{"URL":"http:\/\/journals.sagepub.com\/doi\/10.1177\/003591575304600206"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1953,2]]},"references-count":25,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2016,9]]},"published-print":{"date-parts":[[1953,2]]}},"alternative-id":["10.1177\/003591575304600206"],"URL":"https:\/\/doi.org\/10.1177\/003591575304600206","relation":{},"ISSN":["0035-9157"],"issn-type":[{"value":"0035-9157","type":"print"}],"subject":[],"published":{"date-parts":[[1953,2]]}}}