title: Medical problems of young soccer players.
mesh_terms: D000293:Adolescent; D000328:Adult; D001265:Athletic Injuries; D002980:Climate; D006801:Humans; D007492:Iran; D007869:Leg Injuries / Q000453:epidemiology; D008296:Malaysia; D008297:Male; D009120:Muscle Cramp / Q000453:epidemiology; D012141:Respiratory Tract Infections / Q000453:epidemiology; D013178:Sports Medicine