[A phonopneumographical study on the direction of the initial deflection of the waveforms of coarse crackles and fine crackles].
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D012135:Respiratory Sounds