[1] Univ Connecticut, Ctr Hlth, Div Pulm & Crit Care Med, Sch Med, Farmington, CT 06030 USA
[2] Univ Connecticut, Div Occupat & Environm Med, Sch Med, Farmington, CT 06030 USA
[3] Cent Connecticut State Coll, Dept Mus, New Britain, CT USA
[4] Univ Texas Hlth Sci Ctr, Dept Microbiol, Tyler, TX USA
[5] Brigham & Womens Hosp, Div Pulm & Crit Care, Boston, MA 02115 USA