[1] Monash Univ, Dept Allergy Immunol & Resp Med, 99 Commercial Rd, Melbourne, Vic 3004, Australia
[2] Alfred Hlth, Dept Physiotherapy, Melbourne, Vic, Australia
[3] Inst Breathing & Sleep, Melbourne, Vic, Australia
[4] Glenfield Hosp, NIHR Leicester Resp Biomed Res Unit, Ctr Exercise & Rehabil Sci CERS, Leicester, Leics, England
[5] Univ Leicester, Dept Resp Sci, NIHR Leicester Resp Biomed Res Ctr, Leicester, Leics, England
[6] Harbor UCLA Med Ctr, Lundquist Inst Biomed Innovat, Torrance, CA 90509 USA
[7] Univ Modena & Reggio Emilia, Dept Med & Surg Sci SMECHIMAI, Modena, Italy
[8] Gawlicki Family Fdn, Hartford, CT USA
[9] Univ Calif San Francisco, San Francisco, CA 94143 USA
[10] Univ Toronto, Dept Med, Toronto, ON, Canada
[11] Univ Toronto, Dept Phys Therapy, Toronto, ON, Canada
[12] West Pk Healthcare Ctr, Dept Resp Med, Toronto, ON, Canada
[13] Univ Colorado, Coll Nursing, Anschutz Med Campus, Aurora, CO USA
[14] Univ Calif San Diego, San Diego, CA USA
[15] Providence Vet Affairs Med Ctr, Pulm & Crit Care Sect, Providence, RI USA
[16] Brown Univ, Warren Alpert Med Sch, Providence, RI 02912 USA
[17] Yale Univ, Sch Med, Dept Internal Med, Sect Pulm Crit Care & Sleep Med, New Haven, CT 06510 USA
[18] VA Connecticut Healthcare Syst, West Haven, CT USA
[19] Katholieke Univ Leuven, Dept Rehabil Sci, Leuven, Belgium
[20] Katholieke Univ Leuven, Lab Resp Dis & Thorac Surg BREATHE, Leuven, Belgium
[21] COPD Fdn, Washington, DC USA
[22] Univ Minnesota, Family & Community Hlth, Minneapolis, MN USA
[23] St Francis Hosp & Med Ctr, Pulm & Crit Care Div, Hartford, CT USA