1. Tommy's National Centre for Miscarriage Research, Queen Charlotte's & Chelsea Hospital, Imperial College London London UK
2. KU Leuven, Department of Development & Regeneration Leuven Belgium
3. St Marys' Hospital London UK
4. Chelsea and Westminster NHS Foundation Trust London UK
5. Hillingdon Hospital London UK
6. Wexham Park Hospital Slough UK
7. Royal Free NHS Foundation Trust London UK
8. Royal Surrey County Hospital Guildford UK
9. University Hospital Leuven Leuven Belgium
10. Leiden University Medical Centre Leiden The Netherlands