Impact of vitamin A supplementation on childhood morbidity in northern Ghana.
P
P
Arthur
B
B
Kirkwood
D
D
Ross
S
S
Morris
J
J
Gyapong
A
A
Tomkins
H
H
Addy
D002675:Child, Preschool; D004311:Double-Blind Method; D005869:Ghana; D006801:Humans; D007223:Infant; D009017:Morbidity; D014801:Vitamin A / Q000627:therapeutic use*
D014801:Vitamin A