Toward a reformulation of the neonatal mortality rate.
D000059:Accidents; D000013:Congenital Abnormalities / Q000401:mortality; D003430:Cross-Sectional Studies; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000401:mortality; D014481:United States