1. Department of Physical Therapy, Sackler Faculty of Medicine, Tel Aviv Univesity, P.O. Box 39040, Ramat Aviv, 69978 Tel Aviv, Israel
2. Jones and Partners, Radiologists, Adelaide, SA 5000, Australia
3. Department of Physiotherapy, University of South Australia, Adelaide, SA 5000, Australia
4. Department of Physiology, University of South Australia, Adelaide, SA 5000, Australia