1. L.J. Tuyl, BPhysio, Maitland Private Hospital, Maitland, New South Wales, Australia.
2. J.H. Mackney, MClinEd, BAppSc (Physiotherapy), School of Health Sciences, The University of Newcastle, Callaghan, New South Wales, Australia.
3. C.L. Johnston, MAppSc (Cardiopulmonary Physiotherapy), BAppSc (Physiotherapy), School of Health Sciences, The University of Newcastle, Callaghan 2308, New South Wales, Australia.