1. L.K. Holdsworth, PhD, FCSP, DPT, NHS 24, Caledonia House, 140 Fifty Pitches Rd, Cardonald, Glasgow, G51 4EB Scotland.
2. V.S. Webster, PhD, FCSP, DPT, Glasgow Caledonian University, Glasgow, Scotland.
3. D. Rafferty, MSc, BSc, Glasgow Caledonian University.