[Current problems of prematurity.  1.  The relation of premature infant mortality to general infant mortality].
D001699:Biometry; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature / Q000706:statistics & numerical data*; D061213:Mortality, Premature; D014798:Vital Statistics
INFANT, PREMATURE/statistics; VITAL STATISTICS
Beitrage zum Frühgeburtenproblem der Gegenwart.  1.  Die Frühgeburtensterblichkeit in ihrer Beziehung zur Säuglingssterblichkeit.