1. Department of Orthopedic Surgery, University of Michigan, Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor
2. Institute for Applied Epistemology and Medical Methodology, University of Witten/Herdecke, Freiburg, Germany
3. Centre for Statistics in Medicine, University of Oxford, United Kingdom
4. Ottawa Hospital Research Institute, Department of Epidemiology and Community Medicine, University of Ottawa, Ontario, Canada
5. The Dartmouth Institute and Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
6. Global Advances in Health and Medicine, Portland, Oregon