title: High plasma calcitonin concentrations in chronic bronchitis.
mesh_terms: D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000097:blood*; D002116:Calcitonin / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking
chemical_list: D002116:Calcitonin