[Attempt to evaluate the effectiveness of rickets prevention in children in Zabrze].
D002762:Cholecalciferol / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011044:Poland; D012279:Rickets / Q000517:prevention & control*
D002762:Cholecalciferol
Próba oceny skuteczności profilaktyki krzywicy u dzieci na terenie miasta Zabrza.