title: Ventilatory capacity in a group of opium smokers.
mesh_terms: D000328:Adult; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009892:Opium / Q000633:toxicity*; D012907:Smoking / Q000150:complications; D013147:Spirometry; D019966:Substance-Related Disorders; D014797:Vital Capacity
chemical_list: D009892:Opium