[1] US Dept HHS, Wind River Serv Unit, Indian Hlth Serv, Cheyenne, WY 82002 USA
[2] Med Sans Frontieres Doctors Borders, New York, NY USA
[3] SUNY Buffalo, Div Pulm Crit Care & Sleep Med, Buffalo, NY 14260 USA
[4] Western New York Vet Affairs Healthcare Syst, Buffalo Vet Affairs VA Med Ctr, Buffalo, NY USA
[5] Jericho Rd Community Hlth Ctr, Buffalo, NY USA