title: [Physical fitness in children and adolescents].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D010808:Physical Examination; D010809:Physical Fitness; D011044:Poland; D012572:School Health Services; D012737:Sex Factors; D014786:Vision Disorders / Q000453:epidemiology
vernacular_title: Stan zdrowia dzieci i młodziezy.