TY  - RPRT
TI  - Controlled trial of supervised exercise training in chronic bronchitis.
AU  - D J Sinclair
AU  - C G Ingram
PY  - 1980
DO  - 10.1136/bmj.280.6213.519
UR  - https://pubmed.ncbi.nlm.nih.gov/6989433/
ID  - 6989433
ER  -