OBJECTIVE EVALUATION OF ANTITUSSIVE AGENTS.
D000109:Acetylcholine; D000996:Antitussive Agents; D035843:Biomedical Research; D002951:Citrates; D003061:Codeine; D003371:Cough; D006801:Humans; D010600:Pharmacology; D012907:Smoking
D000996:Antitussive Agents; D002951:Citrates; D000109:Acetylcholine; D003061:Codeine
ACETYLCHOLINE; ANTITUSSIVE AGENTS; CITRATES; CLINICAL RESEARCH; CODEINE; COUGH; PHARMACOLOGY; SMOKING