Commentary on current World Health Organization definitions used in perinatal statistics.
D001724:Birth Weight; D003625:Data Collection; D005260:Female; D005313:Fetal Death / Q000145:classification*; D005865:Gestational Age; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D011247:Pregnancy; D009626:Terminology as Topic; D014944:World Health Organization