[Specific features of the development of premature infants weighing less than 1250 g. at birth].
D002675:Child, Preschool; D005260:Female; D006128:Growth; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature / Q000502:physiology*; D008607:Intellectual Disability / Q000453:epidemiology*; D008297:Male
Odrebność rozwoju wcześniakow z waga po urodzeniu ponizej 1250 g.