Zinc and vitamin A for prevention of upper respiratory tract infection in children.
Rashmi Ranjan
RR
Das
D005260:Female; D006801:Humans; D008297:Male; D012141:Respiratory Tract Infections / Q000517:prevention & control*; D014801:Vitamin A / Q000008:administration & dosage*; D015032:Zinc / Q000008:administration & dosage*
D014801:Vitamin A; D015032:Zinc