Perinatal regionalization in North Carolina, 1967-1979: services, programs, referral patterns, and perinatal mortality rate declines for very low birthweight infants.
D006801:Humans; D007224:Infant Care / Q000639:trends*; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007363:Intensive Care Units, Neonatal; D009657:North Carolina; D012017:Referral and Consultation / Q000639:trends*; D012041:Regional Medical Programs / Q000639:trends*