1. Program on Science, Technology, and Society, Harvard University, Cambridge, MA, USA.
2. Program on Emerging Technology, Massachusetts Institute of Technology, Cambridge, MA, USA.
3. Centre for the Study of Existential Risk, University of Cambridge, Cambridge, UK.
4. Raytheon BBN Technologies, Cambridge, MA, USA.
5. Gryphon Scientific, Takoma Park, MD, USA.
6. Netherlands Biosecurity Office, National Institute for Public Health and the Environment, Bilthoven, Netherlands.
7. Polo d'Innovazione Genomica Genetica e Biologia (PoloGGB), Terni, Italy.
8. Department of Chemical Engineering, Imperial College London, London, UK.
9. Imperial College Centre for Synthetic Biology, London, UK.
10. Center for the Study of Weapons of Mass Destruction, National Defense University, Washington, DC, USA.
11. Engineer Research and Development Center, U.S. Army, Vicksburg, MS, USA.
12. Arizona State University, Tempe, AZ, USA.
13. Pirbright Institute, Pirbright, UK.
14. Joint Genome Institute, U.S. Department of Energy, Berkeley, CA, USA.
15. Nuclear Threat Initiative, Washington, DC, USA.
16. Centre for Biosecurity, Public Health Agency of Canada, Ottawa, Canada.
17. University of Wisconsin, Madison, WI, USA.
18. Center for International Security and Cooperation, Stanford University, Stanford, CA, USA.