title: [A study on pulmonary function of patients with chronic bronchitis, especially the clinical significance of maximum mid-expiratory flow (MMF), gas distribution and closing volume].
mesh_terms: D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000503:physiopathology*; D002908:Chronic Disease; D005540:Forced Expiratory Flow Rates; D006801:Humans; D008176:Lung Volume Measurements; D008450:Maximal Midexpiratory Flow Rate; D008875:Middle Aged; D010100:Oxygen / Q000032:analysis*; D013147:Spirometry
chemical_list: D010100:Oxygen