[The disappearing twin--a new phenomenon in ultrasonic diagnosis in pregnancy].
D000650:Amnion / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins; D014463:Ultrasonography
Mizející dvojce--nový fenomén ultrazvukové diagnostiky v tĕhotenství.