1. University of Sheffield, Sheffield, United Kingdom
2. Maine Medical Center Research Institute, Scarborough, Maine
3. University of California San Francisco, San Francisco, California
4. University of Toronto, Toronto, Ontario, Canada
5. Mayo Clinic Evidence-Based Practice Center, Rochester, Minnesota
6. Endocrine Research Unit, San Francisco Veterans Affairs Medical Center, San Francisco, California
7. Department of Medicine, University of California San Francisco, San Francisco, California