title: A comparison of the assessment of simple bronchitis (chronic mucus hypersecretion) by measurements of sputum volume and by standardized questions on phlegm production.
mesh_terms: D000328:Adult; D001991:Bronchitis / Q000503:physiopathology*; D002908:Chronic Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D009093:Mucus / Q000378:metabolism; D012907:Smoking; D013147:Spirometry; D013183:Sputum / Q000378:metabolism*; D013223:Statistics as Topic; D011795:Surveys and Questionnaires