TY  - RPRT
TI  - Into thinner air.
AU  - Meriam L Dennie
AU  - Elizabeth W Bayley
PY  - 2002
DO  - 10.1097/00000446-200209001-00003
UR  - https://pubmed.ncbi.nlm.nih.gov/12394004/
ID  - 12394004
ER  -