1. Centre for Clinical Haematology, University Hospitals Birmingham NHS Foundation Trust Birmingham UK
2. Department of Cardiology Golden Jubilee National Hospital West of Scotland Regional Heart and Lung Centre Clydebank UK
3. Department of Anaesthetics Manchester University NHS Foundation Trust Manchester UK
4. Department of Obstetrics & Gynaecology Leeds Teaching Hospitals NHS Trust Leeds UK
5. Department of Obstetric Medicine, Women's Services, Guy's and St Thomas’ Hospitals NHS Foundation Trust London England
6. Department of Obstetrics University Hospitals Bristol NHS Foundation Trust Bristol UK
7. Department of Haematology NHS Lothian Edinburgh UK
8. Department of Maternity Newcastle Upon Tyne Hospitals NHS Foundation Trust Newcastle Upon Tyne UK
9. Cellular and Molecular Medicine, University of Bristol Bristol UK
10. Bristol Haematology and Oncology Centre Bristol UK
11. Department of Maternity Birmingham Women's and Children's NHS Foundation Trust Birmingham UK
12. Department of Obstetric and Maternal and Fetal Medicine Manchester University NHS Foundation Trust Manchester UK