1. Norwegian Institute of Public Health; PO Box 4404 Nydalen Oslo Norway 0403
2. University of Saskatchewan; School of Physical Therapy; 104 Clinic Place Saskatoon SK Canada S7N 2Z4
3. Retired Professor; 637 Lisa Court Windsor ON Canada N9G 2N1
4. University of Western Ontario; School of Physical Therapy; Elborn College, Room 1588, School of Physical Therapy, University of Western Ontario London ON Canada N6G 1H1
5. University of Saskatchewan; School of Physical Therapy, College of Medicine; Room 3400, E-wing Health Science Building 104 Clinic Place Saskatoon Saskatchewan Canada S7N 2Z4
6. University of Saskatchewan; Leslie and Irene Dube Health Sciences Library, University Library; Rm 1400 Health Sciences Building 104 Clinic Place Saskatoon SK Canada S7N 5E5
7. University of Saskatchewan; College of Kinesiology; 87 Campus Road Saskatoon SK Canada S7N 5B2