TY - GEN AU - Martinez,O AU - Roe,D A TI - Effect of oral contraceptives on blood folate levels in pregnancy SN - 0002-9378 PY - 1977///0630 KW - Adult KW - Clinical Trials as Topic KW - Contraceptives, Oral KW - pharmacology KW - Diet KW - Erythrocytes KW - analysis KW - Female KW - Folic Acid KW - Humans KW - Pregnancy KW - Seasons N1 - Publication Type: Clinical Trial; Journal Article UR - https://doi.org/10.1016/0002-9378(77)90618-4 ER -