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