An unusual set of triplets: twin intrauterine pregnancy with singleton extrauterine pregnancy.
D000328:Adult; D004312:Douglas' Pouch; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000175:diagnosis*; D014310:Triplets; D014463:Ultrasonography