title: Double-blind trial of early demethylchlortetracycline in minor respiratory illness in general practice.
mesh_terms: D000041:Absenteeism; D000328:Adult; D000667:Ampicillin / Q000627:therapeutic use; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D003139:Common Cold / Q000188:drug therapy; D003707:Demeclocycline / Q000009:adverse effects / Q000627:therapeutic use*; D004357:Drug Synergism; D006801:Humans; D007256:Information Systems; D008297:Male; D008875:Middle Aged; D009297:Nasal Mucosa / Q000378:metabolism; D010919:Placebos; D011676:Punched-Card Systems; D012141:Respiratory Tract Infections / Q000188:drug therapy* / Q000453:epidemiology; D012907:Smoking / Q000150:complications; D013183:Sputum; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D010919:Placebos; D003707:Demeclocycline; D000667:Ampicillin