1. Department of Health, Human Performance, and Recreation, University of Arkansas, Fayetteville, AR, USA
2. Kinsey Institute for Research in Sex, Gender, and Reproduction, Bloomington, IN, USA
3. Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
4. William L. Yarber Endowed Professor of Sexual Health, Department of Applied Health Science, School of Public Health-Bloomington, Indiana University, Bloomington, IN, USA