[Twin pregnancy and fetal and infantile perinatal mortality].
D005260:Female; D005313:Fetal Death; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D011247:Pregnancy; D011272:Pregnancy, Multiple
Ciaza bliźniacza a umieralność okołoporodowa płodów i noworodków.