1. Department of Psychology, University of Southampton, Southampton, England;
2. The Kinsey Institute, Indiana University, Bloomington, Indiana, USA;
3. Rural Center for AIDS/STD Prevention, Indiana University, Bloomington, Indiana, USA;
4. Department of Health Behavior, University of Kentucky, Lexington, Kentucky, USA;
5. Department of Gender Studies, Indiana University, Bloomington, Indiana, USA;
6. Clue by BioWink GmbH, Berlin, Germany;
7. Evolutionary Anthropology Laboratory, Indiana University, Bloomington, Indiana, USA;
8. Department of Anthropology, Indiana University, Bloomington, Indiana, USA;
9. Department of Family Relations and Applied Nutrition, University of Guelph, Guelph, Canada;
10. School of Public Health, Indiana University, Bloomington, Indiana, USA