{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T06:38:01Z","timestamp":1778222281233,"version":"3.51.4"},"reference-count":31,"publisher":"Elsevier BV","issue":"11","license":[{"start":{"date-parts":[[1981,11,1]],"date-time":"1981-11-01T00:00:00Z","timestamp":373420800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":["elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["The American Journal of Clinical Nutrition"],"published-print":{"date-parts":[[1981,11]]},"DOI":"10.1093\/ajcn\/34.11.2423","type":"journal-article","created":{"date-parts":[[2018,1,16]],"date-time":"2018-01-16T10:14:48Z","timestamp":1516097688000},"page":"2423-2433","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":19,"title":["Evidence regarding the minimal daily requirement of dietary vitamin B12"],"prefix":"10.1016","volume":"34","author":[{"given":"S J","family":"Baker","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"V I","family":"Mathan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1093\/ajcn\/34.11.2423_bib1","doi-asserted-by":"crossref","first-page":"250","DOI":"10.3109\/00365515909060445","article-title":"Calculations on vitamin B12 turnover in man: with note on maintenance treatment in pernicious anaemia and radiation dose received by patients ingesting radiovitamin B12","volume":"11","author":"G ras bec k","year":"1959","journal-title":"Scand J Clin Lab Invest"},{"key":"10.1093\/ajcn\/34.11.2423_bib2","doi-asserted-by":"crossref","first-page":"340","DOI":"10.1056\/NEJM196502182720703","article-title":"Studies on the minimum daily requirement for vitamin B12","volume":"272","author":"Sullivan","year":"1965","journal-title":"New Engl J Med"},{"key":"10.1093\/ajcn\/34.11.2423_bib3","series-title":"Practical haematology","author":"Dacie","year":"1956"},{"key":"10.1093\/ajcn\/34.11.2423_bib4","first-page":"11","article-title":"Tropical megaloblastic anaemia in South India","volume":"1","author":"Baker","year":"1958","journal-title":"Indian J Pathol Bateriol"},{"key":"10.1093\/ajcn\/34.11.2423_bib5","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1111\/j.1550-7408.1956.tb02442.x","article-title":"Sugar containing basal medium for vitamin B12 assay with Euglena: application to body fluids","volume":"3","author":"Hutner","year":"1956","journal-title":"J Protozool"},{"key":"10.1093\/ajcn\/34.11.2423_bib6","series-title":"Investigation into the Euglena method of assay of vitamin B12. The results obtained in human serum and liver using an improved method of assay. PhD Thesis","author":"Anderson","year":"1965"},{"key":"10.1093\/ajcn\/34.11.2423_bib7","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1136\/jcp.14.4.335","article-title":"Studies on folic acid activity of human serum","volume":"14","author":"Waters","year":"1961","journal-title":"J Clin Pathol"},{"key":"10.1093\/ajcn\/34.11.2423_bib8","first-page":"214","article-title":"Studies of excretion (and absorption) of Co60 labelled vitamin B12 in pernicious anaemia","volume":"65","author":"Heinle","year":"1952","journal-title":"Trans Assoc Am Physicans"},{"key":"10.1093\/ajcn\/34.11.2423_bib9","first-page":"714","article-title":"Intestinal absorption of radioactive vitamin B12: a comparison of plasma, faecal and urinary test","volume":"61","author":"Mathan","year":"1973","journal-title":"Indian J Med Res"},{"key":"10.1093\/ajcn\/34.11.2423_bib10","doi-asserted-by":"crossref","first-page":"348","DOI":"10.1016\/S0021-9258(18)57092-7","article-title":"Rapid method for determination of fat in faeces","volume":"177","author":"van de Kamer","year":"1949","journal-title":"J Biol Chem"},{"key":"10.1093\/ajcn\/34.11.2423_bib11","doi-asserted-by":"crossref","first-page":"1713","DOI":"10.1136\/bmj.1.5347.1713","article-title":"Hyperpigmentation of skin. A sign of vitamin B12 deficiency","volume":"1","author":"Baker","year":"1963","journal-title":"Br Med J"},{"key":"10.1093\/ajcn\/34.11.2423_bib12","doi-asserted-by":"crossref","first-page":"458","DOI":"10.1136\/gut.6.5.458","article-title":"The stomach in tropical sprue","volume":"6","author":"Vaish","year":"1965","journal-title":"Gut"},{"key":"10.1093\/ajcn\/34.11.2423_bib13","series-title":"Nutrition in preventative medicine","first-page":"445","article-title":"Physiological and practical considerations of nutrient function and requirements","author":"Beaton","year":"1976"},{"key":"10.1093\/ajcn\/34.11.2423_bib14","doi-asserted-by":"crossref","first-page":"320","DOI":"10.3109\/00016346609158455","article-title":"Menstrual blood loss, a population study, variation at different ages and attempts to define normality","volume":"45","author":"Hallberg","year":"1966","journal-title":"Acta Obstet Gynecol Scand"},{"key":"10.1093\/ajcn\/34.11.2423_bib15","series-title":"Nutritional anaemias","year":"1972"},{"key":"10.1093\/ajcn\/34.11.2423_bib16","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1093\/ajcn\/12.2.117","article-title":"Evidence concerning the human requirement for vitamin B12","volume":"12","author":"Bozian","year":"1963","journal-title":"Am J Clin Nutr"},{"key":"10.1093\/ajcn\/34.11.2423_bib17","first-page":"199","article-title":"Metabolic basis of the diagnosis and therapy of vitamin B12 deficiency","volume":"1","author":"Heinrich","year":"1964","journal-title":"Semin Haematol"},{"key":"10.1093\/ajcn\/34.11.2423_bib18","doi-asserted-by":"crossref","first-page":"176","DOI":"10.1093\/ajcn\/18.3.176","article-title":"Vitamin B12 turnover in man. The assimilation of vitamin B12 from natural foodstuff by man and estimates of minimal daily dietary requirements","volume":"18","author":"Heyssel","year":"1966","journal-title":"Am J Clin Nutr"},{"key":"10.1093\/ajcn\/34.11.2423_bib19","doi-asserted-by":"crossref","first-page":"295","DOI":"10.1088\/0031-9155\/11\/2\/309","article-title":"Vitamin B12 kinetics in man. Implications on total body B12 determinations, human requirements and normal and pathological cellular B12 uptake","volume":"11","author":"Riezenstein","year":"1966","journal-title":"Phys Med Biol"},{"key":"10.1093\/ajcn\/34.11.2423_bib20","first-page":"392","article-title":"Metabolic equilibrium of tracer and natural vitamin B12","volume":"72","author":"Adams","year":"1968","journal-title":"J Lab Clin Med"},{"key":"10.1093\/ajcn\/34.11.2423_bib21","series-title":"Vitamin Bl2 and intrinsic factor: First European Symposium","article-title":"Vitamin B12 in tissues in pernicious anaemia and other conditions","author":"Ross","year":"1957"},{"key":"10.1093\/ajcn\/34.11.2423_bib22","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1159\/000387542","article-title":"Human vitamin B12 deficiency","volume":"8","author":"Baker","year":"1967","journal-title":"World Rev Nutr Diet"},{"key":"10.1093\/ajcn\/34.11.2423_bib23","doi-asserted-by":"crossref","first-page":"726","DOI":"10.1016\/0002-9343(58)90010-X","article-title":"Vitamin B12 requirement of adult man","volume":"25","author":"Darby","year":"1958","journal-title":"Am J Med"},{"key":"10.1093\/ajcn\/34.11.2423_bib24","doi-asserted-by":"crossref","first-page":"130","DOI":"10.1016\/S0016-5085(19)34273-8","article-title":"Gastric and hematologic abnormalities in a vegan with nutritional vitamin B12 deficiency: effect of oral vitamin B12","volume":"53","author":"Winawer","year":"1967","journal-title":"Gastroenterology"},{"key":"10.1093\/ajcn\/34.11.2423_bib25","doi-asserted-by":"crossref","first-page":"542","DOI":"10.1016\/S0140-6736(70)91347-4","article-title":"Response of dietary vitamin B12 deficiency to physiological oral doses of cyanocobalamin","volume":"2","author":"Stewart","year":"1970","journal-title":"Lancet"},{"key":"10.1093\/ajcn\/34.11.2423_bib26","series-title":"Tropical sprue and megaloblastic anaemia","first-page":"204","article-title":"Tropical sprue in Southern India","author":"Baker","year":"1971"},{"key":"10.1093\/ajcn\/34.11.2423_bib27","doi-asserted-by":"crossref","first-page":"781","DOI":"10.1038\/283781a0","article-title":"Vitamin B\u01422 synthesis by human small intestinal bacteria","volume":"283","author":"Albert","year":"1980","journal-title":"Nature"},{"key":"10.1093\/ajcn\/34.11.2423_bib28","doi-asserted-by":"crossref","first-page":"704","DOI":"10.1016\/S0016-5085(76)80259-4","article-title":"Free intrinsic factor in the small intestine in man","volume":"70","author":"Kapadia","year":"1976","journal-title":"Gastroenterology"},{"key":"10.1093\/ajcn\/34.11.2423_bib29","doi-asserted-by":"crossref","first-page":"647","DOI":"10.7326\/0003-4819-88-5-647","article-title":"Nutritional vitamin B12 deficiency; possible contributory role of subtle vitamin B12 malabsorption","volume":"88","author":"Carmel","year":"1978","journal-title":"Ann Intern Med"},{"key":"10.1093\/ajcn\/34.11.2423_bib30","doi-asserted-by":"crossref","first-page":"913","DOI":"10.1016\/S0016-5085(73)80002-2","article-title":"Impaired assimilation of egg Co57 vitamin B12 in patients with hypochlorhydria and achlorhydria and after gastric resection","volume":"64","author":"D\u00f6scherholmen","year":"1973","journal-title":"Gastroenterology"},{"key":"10.1093\/ajcn\/34.11.2423_bib31","series-title":"Requirements of ascorbic acid, vitamin D, vitamin B12, folate and iron","year":"1970"}],"container-title":["The American Journal of Clinical Nutrition"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002916523432042?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002916523432042?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/academic.oup.com\/ajcn\/article-pdf\/34\/11\/2423\/24157585\/2423.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,6,9]],"date-time":"2023-06-09T08:25:51Z","timestamp":1686299151000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002916523432042"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1981,11]]},"references-count":31,"journal-issue":{"issue":"11","published-print":{"date-parts":[[1981,11]]}},"alternative-id":["S0002916523432042"],"URL":"https:\/\/doi.org\/10.1093\/ajcn\/34.11.2423","relation":{},"ISSN":["0002-9165"],"issn-type":[{"value":"0002-9165","type":"print"}],"subject":[],"published":{"date-parts":[[1981,11]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Evidence regarding the minimal daily requirement of dietary vitamin B12","name":"articletitle","label":"Article Title"},{"value":"The American Journal of Clinical Nutrition","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1093\/ajcn\/34.11.2423","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 1981 American Society for Nutrition. Published by Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}