[Chronic bronchitis incidence (based on epidemiological survey data in the Latvian SSR)].
D000328:Adult; D000367:Age Factors; D000368:Aged; D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease; D006801:Humans; D007844:Latvia; D008297:Male; D008875:Middle Aged; D012306:Risk; D012424:Rural Population; D012907:Smoking; D014505:Urban Population
Rasprostranennost' khronicheskogo bronkhita (po dannym épidemiologicheskikh obsledovaniĭ v Latviĭskoĭ SSR).