[Multiple pregnancies and folic acid].
Hertrampf
Eva
E
Cortés
Fanny
F
D002677:Chile / Q000453:epidemiology; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage*; D005527:Food, Fortified; D006801:Humans; D050498:Live Birth / Q000453:epidemiology; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000187:drug effects / Q000706:statistics & numerical data*; D014427:Twins; D014803:Vitamin B Complex / Q000008:administration & dosage*
D014803:Vitamin B Complex; D005492:Folic Acid