| 1 (3) | U.S. Department of Health and Human Services * | USA |  |
| 2 (62) | US Food and Drug Administration | USA | |
| 3 (114) | Los Alamos National Laboratory * | USA | |
| 4 (196) | Center for Drug Evaluation & Research | USA | |
| 5 (227) | US Naval Research Laboratory | USA | |
| 6 (280) | U.S. Army * | USA | |
| 7 (323) | United States Department of Agriculture | USA | |
| 8 (327) | National Center for Toxicological Research | USA | |
| 9 (359) | US Environmental Protection Agency | USA | |
| 10 (503) | Center for Devices and Radiological Health | USA | |
| 11 (524) | Center for Biologics Evaluation and Research | USA | |
| 12 (663) | National Institute of Standards and Technology * | USA | |
| 13 (671) | U.S. Department of Energy * | USA | |
| 14 (746) | Pacific Northwest National Laboratory | USA | |
| 15 (756) | United States Geological Survey | USA | |
| 16 (768) | Center for Food Safety and Applied Nutrition | USA | |
| 17 (787) | Oak Ridge Institute for Science and Education | USA | |
| 18 (816) | U.S. Air Force | USA | |
| 19 (889) | Research Institute for Fragrance Materials | USA | |
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