TY  - RPRT
TI  - Introduction to a new inspiratory threshold loading device.
AU  - R C Chen
AU  - C L Que
AU  - S Yan
PY  - 1998
DO  - 10.1183/09031936.98.12010208
UR  - https://pubmed.ncbi.nlm.nih.gov/9701439/
ID  - 9701439
ER  -