1. Kroto Research Institute, University of Sheffield (SR, CH, NIO, SM), Sheffield, United Kingdom
2. Royal Hallamshire Hospital (CH, NIO, CRC), Sheffield, United Kingdom
3. Organ Systems, Department of Development and Regeneration, Katholieke Universiteit Leuven-University of Leuven, Leuven, Belgium
4. Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven (IU, GC, JD), Belgium