[Participation of the twins in perinatal mortality].
D001724:Birth Weight; D003604:Czechoslovakia; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D014427:Twins
Podíl dvojcat na perinatální mortalitĕ