Analysis of birth weight, gestational age, and fetal viability, U. S. births, 1968.
D001724:Birth Weight; D005260:Female; D005313:Fetal Death; D005315:Fetal Diseases; D005865:Gestational Age; D006262:Health; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D044469:Racial Groups; D012737:Sex Factors; D014481:United States