(Q68055497)
Statements
Long-term multicentre trial in chronic nonspecific lung disease: methodology and baseline assessment in adult patients. Dutch CNSLD Study Group (English)
P L Brand
D S Postma
P J Sterk
P H Quanjer
H J Sluiter
J H Dijkman
C L van Herwaarden
C Hilvering
1 January 1992