TY  - RPRT
TI  - Which deep breathing device should the postoperative patient use?
AU  - D H Lederer
AU  - J M Van de Water
AU  - R B Indech
PY  - 1980
DO  - 10.1378/chest.77.5.610
UR  - https://pubmed.ncbi.nlm.nih.gov/7363678/
ID  - 7363678
ER  -