| 1 (6) | U.S. Department of Health & Human Services * | USA |  |
| 2 (16) | Centers for Disease Control and Prevention | USA | |
| 3 (21) | National Institutes of Health | USA | |
| 4 (77) | University of Florida Health Science Center | USA | |
| 5 (86) | Ohio State University Wexner Medical Center | USA | |
| 6 (157) | Veterans Affairs Medical Centers * | USA | |
| 7 (167) | National Institute of Allergy and Infectious Diseases | USA | |
| 8 (189) | Mayo Clinic * | USA | |
| 9 (206) | Mount Sinai Health System * | USA | |
| 10 (264) | University of Pennsylvania Health System | USA | |
| 11 (271) | National Cancer Institute | USA | |
| 12 (290) | Massachusetts General Hospital | USA | |
| 13 (294) | IWK Health Centre | CAN | |
| 14 (314) | Woodruff Health Sciences Center | USA | |
| 15 (350) | Stanford Medicine | USA | |
| 16 (369) | University of Texas M.D. Anderson Cancer Center | USA | |
| 17 (401) | Yale University Health & Medicine | USA | |
| 18 (411) | University of Wisconsin Health | USA | |
| 19 (445) | Kaiser Permanente, Oakland * | USA | |
| 20 (446) | Public Health Agency of Canada | CAN | |
| 21 (453) | University of Miami Health System | USA | |
| 22 (460) | Duke Medicine | USA | |
| 23 (480) | Wake Forest University Baptist Medical Center | USA | |
| 24 (494) | National Institute on Aging | USA | |
| 25 (535) | Centre Hospitalier Universitaire de Quebec | CAN | |
| 26 (549) | Johns Hopkins Medicine | USA | |
| 27 (638) | Children's Hospital of Philadelphia | USA | |
|
