A productive cough upon request as an index of chronic bronchitis: the effects of age, sex, smoking habit and environment upon prevalence in Australian general practice.
D000328:Adult; D000367:Age Factors; D000368:Aged; D001294:Attitude to Health; D001315:Australia; D001991:Bronchitis / Q000175:diagnosis* / Q000453:epidemiology* / Q000209:etiology; D003371:Cough; D005194:Family Practice; D005260:Female; D006184:Habits; D006801:Humans; D008297:Male; D008875:Middle Aged; D012424:Rural Population; D012737:Sex Factors; D012907:Smoking / Q000150:complications*; D013183:Sputum / Q000378:metabolism; D014505:Urban Population