1. Department of Psychology, Harvard University , Cambridge, MA 02138 , USA
2. Gryphon Scientific LLC, 6930 Carroll Ave., Takoma Park MD 20912, and Center for International Security and Cooperation, Stanford University , Stanford, CA 94305 , USA
3. Care and Public Health Research Institute & Department of Health Promotion, Faculty of Health, Medicine, and Life Sciences, Maastricht University , 6200 MD, Maastricht , the Netherlands
4. Center for International Security and Cooperation, Stanford University , Stanford, CA 94305 , USA
5. Department of Bioengineering and Center for International Security and Cooperation, Stanford University , Stanford, CA 94305 , USA