[On the morbidity of school-children in senior classes of Leningrad boarding schools].
D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009017:Morbidity; D012426:Russia; D012572:School Health Services
O zabolevaemosti uchashchikhsia starshikh klassov shkol-internatov Leningrada.