TY  - RPRT
TI  - Lung Health Study: pulmonary function testing.
AU  - S S Hurd
PY  - 1991
DO  - 10.1164/ajrccm/143.6.1211
UR  - https://pubmed.ncbi.nlm.nih.gov/2048801/
ID  - 2048801
ER  -