| 501 (3564) | Cleveland State University | USA |  |
| 502 (3576) | Wright State University | USA | |
| 503 (3590) | Health Canada | CAN |  |
| 504 (3734) | University of Alaska, Fairbanks | USA | |
| 505 (3820) | New Mexico Institute of Mining and Technology * | USA | |
| 506 (3888) | California State University, Northridge | USA | |
| 507 (3903) | United States Naval Academy | USA | |
| 508 (3961) | University of Missouri, Saint Louis | USA | |
| 509 (3977) | Texas Christian University | USA | |
| 510 (4109) | University of the Pacific | USA | |
| 511 (4110) | Illinois State University | USA | |
| 512 (4123) | Villanova University | USA | |
| 513 (4134) | University of Lethbridge | CAN | |
| 514 (4190) | Procter & Gamble, United States | USA |  |
| 515 (4241) | Trent University | CAN | |
| 516 (4321) | Saint Mary's University | CAN | |
| 517 (4364) | Missouri State University | USA | |
| 518 (4387) | National Center for Toxicological Research | USA |  |
|
