One entrance into life.
D009008:Abnormalities, Severe Teratoid; D000029:Abortion, Legal; D000022:Abortion, Spontaneous / Q000235:genetics; D000818:Animals; D002869:Chromosome Aberrations; D000013:Congenital Abnormalities; D004677:Encephalocele; D005260:Female; D005333:Fetus; D006801:Humans; D007231:Infant, Newborn; D008168:Lung / Q000196:embryology; D011247:Pregnancy; D014428:Twins, Conjoined