[1] Univ New Mexico, Dept Radiol, Albuquerque, NM 87131 USA
[2] Royal Darwin Hosp, Darwin, NT, Australia
[3] Menzies Sch Hlth Res, Darwin, NT, Australia
[4] Univ Colorado Denver, Dept Med, Aurora, CO USA
[5] Denver Vet Affairs Med Ctr, Pulm Sect, Denver, CO USA
[6] Natl Jewish Hlth, Div Mycobacterial & Resp Infect, Denver, CO USA
[7] Natl Jewish Hlth, Dept Med, Denver, CO USA
[8] Natl Jewish Hlth, Program Cell Biol, Denver, CO USA
[9] Univ Colorado, Div Pulm Sci & Crit Care Med, Anschutz Med Campus, Denver, CO 80202 USA