A new technique to obtain sputum for cytologic study: external percussion and vibration of the chest wall.
D001980:Bronchi / Q000033:anatomy & histology; D002283:Carcinoma, Bronchogenic / Q000175:diagnosis*; D006801:Humans; D008168:Lung / Q000033:anatomy & histology; D010474:Percussion; D013183:Sputum / Q000166:cytology*