[Vitamin A and its relation to follicular hyperkeratosis and endemic goiter in school children of Ciudad Vieja, Guatemala].
D002648:Child; D004032:Diet; D006042:Goiter; D006043:Goiter, Endemic; D006166:Guatemala; D006801:Humans; D007642:Keratosis; D015596:Nutrition Assessment; D009752:Nutritional Status; D014801:Vitamin A / Q000150:complications*
D014801:Vitamin A
GOITER/nutrition and diet; KERATOSIS/nutrition and diet; VITAMIN A/complications