[Studies of refractive errors in children of the elementary schools of the town of Crotone].
D002648:Child; D005260:Female; D006801:Humans; D007558:Italy; D008297:Male; D012030:Refractive Errors / Q000453:epidemiology*; D012572:School Health Services
Indagine sui vizi di refrazione tra i bambini delle scuole elementari del comune di Crotone.