Premenarchal pregnancy.
D000293:Adolescent; D000367:Age Factors; D004967:Estrogens / Q000494:pharmacology; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D007774:Lactation / Q000187:drug effects; D008598:Menstruation; D011247:Pregnancy; D011512:Proteus Infections
D004967:Estrogens