Vitamin B12 Serum Level in Pregnancy: PDF Only
Young, John E. M.D.; Barrows, Charles Jr. Sc.D.; Okuda, Kunio M.D.; Chow, Bacon F. Ph.D.
From the Department of Obstetrics, The Johns Hopkins Hospital, and the Department of Biochemistry, School of Hygiene & Public Health, The Johns Hopkins University, Baltimore, Md.
