1. Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr Aiguader 88, Barcelona 08003, Spain
2. Gynaecology Department, Institute Clinic of Gynaecology, Obstetrics and Neonatology, Hospital Clinic, Barcelona 08036, Spain
3. Faculty of Medicine, University of Barcelona, Barcelona 08036, Spain
4. Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona 08036, Spain
5. Universitat Pompeu Fabra (UPF), Barcelona 08003, Spain