Table S1.

List of independent ethics committees/institutional review boards

1. Munson Medical Center, 1105 Sixth Street, Traverse City, MI 49684-2386

2. Emory University, 1599 Clifton Road, 5th Floor, Atlanta, GA 30322

3. St Vincent Hospital and Health Care Center, Inc., 8402 Harcourt Road, Suite 805, Indianapolis, IN 46260

4. Western Institutional Review Board, 3535 7th Avenue SW, Olympia, WA 98502-5010

5. Henry Ford Health System, CFP-Basement 046, 2799 West Grand Boulevard, Detroit, Ml 48202-2689, Chairperson: Dr Timothy Roehrs, PhD

6. Vanderbilt University, 504 Oxford House, Nashville, TN 37232-4315

7. Western Institutional Review Board, 1019 39th Avenue SE, Puyallup, WA 98374

8. University of Colorado Multiple, Institutional Review Board, 13001 E 17th Place, Building 500, Room N3214, Aurora, CO 80045

9. Michigan State University, Olds Hall, 408 West Circle Drive, #207, East Lansing, MI 48824, Chairperson: Dr Ashir Kumar

10. Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239-3098

11. University of Minnesota, D528 Mayo Memorial Building, 420 Delaware Street S.E., MMC 820, Minneapolis, MN 55455

12. Rush University Medical Center, 1653 West Congress Parkway, Chicago, IL 60612-3833

13. Wake Forest University Health Services, Medical Center Boulevard, Winston-Salem, NC 27157-1023

14. Georgetown University, 37th and O Streets, N.W., Washington, DC 20057