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6. Maternal folate deficiency and pregnancy wastage. IV. Effects of folic acid supplements, anticonvulsants, and oral contraceptives. Pritchard JA, Scott DE, Whalley PJ. Am J Obstet Gynecol; 1971 Feb 01; 109(3):341-6. PubMed ID: 5549181 [Abstract] [Full Text] [Related]
7. Oral contraceptives and the cobalamin (vitamin B12) metabolism. Hjelt K, Brynskov J, Hippe E, Lundström P, Munck O. Acta Obstet Gynecol Scand; 1985 Feb 01; 64(1):59-63. PubMed ID: 3976378 [Abstract] [Full Text] [Related]