Iron, folic acid and vitamin B12 levels in normal pregnancy, and their influence on birth-weight and the duration of pregnancy.
D001724:Birth Weight; D005260:Female; D005492:Folic Acid / Q000097:blood*; D005745:Gastric Acidity Determination; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007231:Infant, Newborn; D007501:Iron / Q000097:blood*; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D014805:Vitamin B 12 / Q000097:blood*
D006454:Hemoglobins; D005492:Folic Acid; D007501:Iron; D014805:Vitamin B 12