1. Prince of Wales Hospital; Departments of Physiotherapy and Respiratory Medicine; Barker Street Randwick NSW Australia 2031
2. Canterbury Christ Church University; Faculty of Health and Wellbeing; Canterbury UK
3. Canterbury Christ Church University; School of Public Health, Midwifery and Social Work; North Holmes Road Canterbury Kent UK CT1 1QU
4. The University of Sydney; Discipline of Physiotherapy, Faculty of Health Sciences; Lidcombe Australia