1. Network for Young Researchers in Andrology (NYRA) 1 , 08021, Barcelona , Spain
2. School of Biological Science, University of East Anglia 2 , NR4 7TJ Norwich , UK
3. European Sperm Bank Struenseegade 9 3 , 2, 2200 Copenhagen , Denmark
4. University Medical Campus, Vrije Universiteit Brussel 4 Biology of the Testis lab , , 1090 Brussels , Belgium
5. Donders Institute for Brain, Cognition and Behaviour, Radboudumc 5 Department of Human Genetics , , 6525 GD Nijmegen , The Netherlands
6. School of BioSciences, The University of Melbourne 6 , Parkville , Victoria, 3010, Australia
7. Centre for Reproductive Medicine and Andrology, University of Münster 7 , 48149 Münster , Germany
8. Université Paris Cité, INSERM, CNRS, Institut Cochin 8 , F-75014 Paris , France