[EPIDEMIOLOGY OF VITAMIN A DEFICIENCY].
D001766:Blindness; D004813:Epidemiology; D006801:Humans; D007634:Keratitis; D007635:Keratitis, Dendritic; D007732:Kwashiorkor; D014802:Vitamin A Deficiency; D014985:Xerophthalmia
BLINDNESS; EPIDEMIOLOGY; KERATITIS, DENDRITIC; KWASHIORKOR; VITAMIN A DEFICIENCY; XEROPHTHALMIA
DE EPIDERMIOLOGIE VAN HET VITAMINE-A-GEBREK.