TY  - RPRT
TI  - The flutter device and expiratory pressures.
AU  - Dina Brooks
AU  - Ellen Newbold
AU  - Louise F Kozar
AU  - Miguel Rivera
DO  - 10.1097/00008483-200201000-00008
UR  - https://pubmed.ncbi.nlm.nih.gov/11839998/
ID  - 11839998
ER  -