1. Department of Endocrinology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
2. Department of Nuclear Medicine, La Timone University Hospital, Aix-Marseille University, Marseille, France
3. Program in Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institutes of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA