[Epidemiology and etiology of chronic bronchitis].
Karnaukh
N G
NG
Krushevskiĭ
V D
VD
Bednarik
O N
ON
Lugovskoĭ
S P
SP
D001991:Bronchitis / Q000453:epidemiology / Q000209:etiology; D002908:Chronic Disease; D004781:Environmental Exposure; D006801:Humans; D016273:Occupational Exposure; D012307:Risk Factors
K voprosu ob épidemiologii i étiologii khronicheskogo bronkhita.