The preventive aspects of deafness and defective vision in schoolchildren.
D002648:Child; D003638:Deafness / Q000517:prevention & control*; D005123:Eye; D006293:Health Promotion; D034381:Hearing Loss; D006801:Humans; D006920:Hygiene; D014786:Vision Disorders / Q000517:prevention & control*; D014785:Vision, Ocular
DEAFNESS/prevention and control--in children; EYE/care and hygiene