The effects of vitamin C, vitamin B6, vitamin B12, folic acid, riboflavin, and thiamin on the breast milk and maternal status of well-nourished women at 6 months postpartum - Thomas,M.R.; Sneed,S.M.; Wei,C.; Nail,P.A.; Wilson,M.; Sprinkle,E.E. (Am J Clin Nutr, 1980)