[Clinical experiences with a new antitussive and expectoration-promoting preparation].
D000996:Antitussive Agents; D003371:Cough / Q000628:therapy*; D008691:Methadone / Q000031:analogs & derivatives; D013183:Sputum
D000996:Antitussive Agents; D008691:Methadone
COUGH/therapy; METHADONE/related compounds