[Effect of rickets prevention on bronchopneumonia morbidity and mortality in children during the 1st vear of life in rural areas].
D001996:Bronchopneumonia; D002648:Child; D004872:Ergocalciferols; D006801:Humans; D009017:Morbidity; D012279:Rickets
D004872:Ergocalciferols
BRONCHOPNEUMONIA; RICKETS; VITAMIN D 2