1. National Health and Medical Research Council, Centre of Excellence in Treatable Traits, Newcastle, NSW 2305, Australia
2. Asthma and Breathing Program, Hunter Medical Research Institute, Newcastle, NSW 2305, Australia
3. School of Nursing and Midwifery, University of Newcastle, Newcastle, NSW 2308, Australia
4. Graduate Program in Rehabilitation Sciences, Pitagoras Unopar University, Londrina 86041-140, PR, Brazil
5. Laboratory of Research in Respiratory Physiotherapy, Department of Physiotherapy, State University of Londrina, Londrina 86038-350, PR, Brazil
6. School of Medicine and Public Health, University of Newcastle, Newcastle, NSW 2308, Australia
7. Department of Respiratory and Sleep Medicine, John Hunter Hospital, Newcastle, NSW 2305, Australia