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Comparative Study
. 1979 Dec;120(6):1221-31.
doi: 10.1164/arrd.1979.120.6.1221.

Comparison of three standardized questionnaires on respiratory symptoms

K J Helsing, G W Comstock, F E Speizer, B G Ferris, M D Lebowitz, M S Tockman, B Burrows
Comparative Study

Comparison of three standardized questionnaires on respiratory symptoms

K J Helsing et al. Am Rev Respir Dis. 1979 Dec.
No abstract available

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