[Vitamin A and its relation to hyperkeratosis follicularis and endemic goiter in school children in Ciudad Vieja, Guatemala].
D002648:Child; D007644:Darier Disease; D006042:Goiter; D006043:Goiter, Endemic; D006166:Guatemala; D006801:Humans; D007223:Infant; D007642:Keratosis; D055623:Keratosis, Actinic; D014801:Vitamin A / Q000628:therapy*
D014801:Vitamin A
GOITER/in infancy and childhood; KERATOSIS/in infancy and childhood; VITAMIN A/therapy