1. Department of Haematological Medicine King's College Hospital NHS Foundation Trust London UK
2. Hematology Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ca' Granda Ospedale Maggiore Policlinico Milan Italy
3. Department of Obstetrics and Gynaecology King's College Hospital NHS Foundation Trust London UK
4. Department of Oncology and Onco‐hematology University of Milan Milan Italy
5. Faculty of Medicine King's College London London UK