title: Letter: Monoamniotic twins.
mesh_terms: D000650:Amnion; D005260:Female; D005313:Fetal Death / Q000209:etiology; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D014427:Twins; D014428:Twins, Conjoined / Q000209:etiology; D014470:Umbilical Cord