[Development of mortality of low birth weight newborn infants the years 1969-1980].
D005859:Germany, East; D006801:Humans; D007224:Infant Care; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007362:Intensive Care Units
Entwicklung der Sterblichkeit untergewichtiger Neugeborener der Jahre 1969-1980.