1. Research Group on Adolescent Health (GRSA), Center for Primary Care and Public Health (Unisanté), – University of Lausanne, Lausanne, Switzerland
2. Institute of Social Sciences & Swiss Center of Competence in Research LIVES, University of Lausanne, Lausanne, Switzerland
3. Sexual Health Switzerland, Lausanne, Switzerland
4. Department of Reproductive Endocrinology, University Hospital Zurich, Zurich, Switzerland