TY  - RPRT
TI  - Metered dose inhaler (MDI) systems.
AU  - T S Purewal
PY  - 1999
DO  - 10.1016/s0378-5173(99)00130-1
UR  - https://pubmed.ncbi.nlm.nih.gov/10523127/
ID  - 10523127
ER  -