Affiliation: | 1. Centre for Health, Activity and Rehabilitation Research (CHARR), School of Physiotherapy Christchurch, University of Otago, PO Box 4345, Christchurch Mail Centre 8140, New Zealand;2. Centre for Health, Activity and Rehabilitation Research (CHARR), School of Physiotherapy, University of Otago, PO Box 56, Dunedin, New Zealand |