TY  - RPRT
TI  - Lung function testing: methods and reference values for forced expiratory volume (FEV1) and transfer factor (TL).
AU  - J E Cotes
AU  - D J Chinn
AU  - J W Reed
PY  - 1997
DO  - 10.1136/oem.54.7.457
UR  - https://pubmed.ncbi.nlm.nih.gov/9282120/
ID  - 9282120
ER  -