1. Clinical and Rehabilitation Sciences, Faculty of Health Sciences, The University of Sydney; c/o Professor Jennifer Alison, 75 East St Lidcombe NSW Australia 2141
2. St Vincent's Hospital; Physiotherapy Department; Sydney Australia
3. The University of Sydney; Clinical and Rehabilitation Sciences, Faculty of Health Sciences; PO Box 170 Lidcombe Australia
4. Katholieke Universiteit Leuven; Research Centre for Cardiovascular and Respiratory Rehabilitation; Leuven Belgium
5. The Royal Prince Alfred Hospital; Institute of Respiratory Medicine; Missenden Road Camperdown Sydney New South Wales Australia NSW 2050