TY  - RPRT
TI  - Spirometry in clinical practice.
AU  - D Vijayasekaran
AU  - L Subramanyam
AU  - A Balachandran
AU  - So Shivbalan
PY  - 2003
UR  - https://pubmed.ncbi.nlm.nih.gov/12881618/
ID  - 12881618
ER  -