Oral contraceptives and women's preferences for facial masculinity and symmetry: Evidence from a double-blind randomized controlled trial - Ranehill, Eva; Zethraeus, Niklas; Apicella, Coren; Blomberg, liselott; von Schoultz, Bo; Hirschberg, Angelica Lindén; Johannesson, Magnus; Dreber, Anna; Lund University, Lund University School of Economics and Management, LUSEM, Department of Economics, Lunds universitet, Ekonomihögskolan, Nationalekonomiska institutionen, Originator (Evolution and Human Behavior, 2025)