Multiple pregnancies and erythroblastosis foetalis.
D004899:Erythroblastosis, Fetal; D005260:Female; D005333:Fetus; D006402:Hematologic Diseases; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011272:Pregnancy, Multiple
ERYTHROBLASTOSIS, FETAL; PREGNANCY/multiple