[Incidence of upper respiratory tract diseases in children during the winter season (observations of an outpatient clinic physician)].
D000293:Adolescent; D000367:Age Factors; D000553:Ambulatory Care; D002648:Child; D002662:Child Health Services / Q000600:supply & distribution; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010038:Otorhinolaryngologic Diseases / Q000453:epidemiology*; D011044:Poland; D012140:Respiratory Tract Diseases / Q000453:epidemiology*; D012621:Seasons; D012737:Sex Factors; D014505:Urban Population
Zachorowalność na choroby górnych dróg oddechowych w okresie zimowym u dzieci (obserwacje lekarza poradni).