RT Journal Article SR Electronic T1 The incidence and prevention of folate deficiency in a pregnant clinic population JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 797 OP 806 VO 95 IS 16 A1 L. Lowenstein A1 G. Cantlie A1 O. Ramos A1 L. Brunton YR 1966 UL http://www.cmaj.ca/content/95/16/797.abstract