[Promotive and impeding factors in the decline in infant mortality].
Okolski
M
M
D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D007226:Infant Mortality; D009026:Mortality; D011044:Poland; D011153:Population; D011157:Population Dynamics; D009626:Terminology as Topic
Comparative Studies; Demographic Factors; Developed Countries; Eastern Europe; Europe; Infant Mortality--changes; Mortality; Neonatal Mortality; Poland; Population; Population Dynamics; Terminology