| 1 (8) | Centers for Disease Control and Prevention | USA |  |
| 2 (19) | National Institutes of Health | USA | |
| 3 (83) | University of Florida Health Science Center | USA | |
| 4 (90) | National Institute of Allergy and Infectious Diseases | USA | |
| 5 (133) | Cincinnati Children's Hospital Medical Center | USA | |
| 6 (139) | Woodruff Health Sciences Center | USA | |
| 7 (145) | Ohio State University Wexner Medical Center | USA | |
| 8 (165) | Veterans Affairs Medical Centers * | USA | |
| 9 (180) | Mayo Clinic * | USA | |
| 10 (195) | Vanderbilt University Medical Center | USA | |
| 11 (200) | UC Davis Health System | USA | |
| 12 (201) | University of Pennsylvania Health System | USA | |
| 13 (205) | Duke Medicine | USA | |
| 14 (256) | U.S. Department of Health & Human Services | USA | |
| 15 (300) | University of Wisconsin Health | USA | |
| 16 (304) | Public Health Agency of Canada | CAN | |
| 17 (323) | Kaiser Permanente, Oakland * | USA | |
| 18 (340) | Centre Hospitalier Universitaire de Quebec | CAN | |
| 19 (359) | Stanford Medicine | USA | |
| 20 (374) | Yale University Health & Medicine | USA | |
| 21 (390) | University of Michigan Health System | USA | |
| 22 (463) | Montefiore Medical Center * | USA | |
| 23 (464) | Wake Forest University Baptist Medical Center | USA | |
| 24 (474) | Johns Hopkins Medicine | USA | |
| 25 (525) | Public Health Ontario | CAN | |
| 26 (526) | Institute for Clinical Evaluative Sciences | CAN | |
| 27 (614) | Children's Hospital of Philadelphia | USA | |
|
