1. Centre of Reproductive Medicine and Andrology; University of Münster; Münster Germany
2. Centre of Excellence in Genomic Medicine Research; King Abdulaziz University; Jeddah Saudi Arabia
3. Unit of Andrology and Reproductive Medicine; Department of Medicine; University of Padova; Padova Italy
4. Department of Endocrinology and Internal Medicine; Aarhus University Hospital; Aarhus Denmark
5. Department of Pediatric Endocrinology; Charité University; Berlin Germany
6. Service de Médecine de la Reproduction; Hôpital Femme-Mère-Enfant; Université Claude-Bernard; Lyon France
7. Department of Pediatrics; School of Medicine; University of Virginia; Charlottesville VA USA