1. University of Alberta, Edmonton, Alberta, Canada
2. The Spine Institute for Quality, Oskaloosa, Iowa, USA
3. Karolinska Institute, Solna, Stockholm, Sweden
4. Universite du Quebec a Trois-Rivieres, Trois-Rivieres, Quebec, Canada
5. Macquarie University, Sydney, Australia
6. University of Minnesota, Minneapolis, MN, USA
7. University of Southern Denmark, Odense, Denmark
8. Federal University of Rio Grande do Sul, Porto Alegre, Brazil
9. University of South Africa, Pretoria, South Africa
10. D’Youville College, Buffalo, NY, USA