[Mortality of low-birth-weight newborn infants in the Warsaw hospitals during the years 1970-1974].
D049673:History, 20th Century; D006771:Hospitals, Maternity / Q000266:history; D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D011044:Poland; D014504:Urban Health / Q000266:history
Smiertelność noworodków z niskim urodzeniowym ciezarem w latach 1970--1974 w szpitalach w Warszawie.