1. Centre for Haematology; Imperial College London at Hammersmith Hospital; London United Kingdom
2. Department of Haematology; EBMT Paris Study Office/CEREST-TC/Saint Antoine Hospital; Paris France
3. Department of Internal Medicine III; Hematopoietic Cell Transplantation, Ludwig-Maximilians-University Hospital of Munich-Grosshadern; Munich Germany
4. Haematology-BMT Unit; George Papanicolaou General Hospital; Thessaloniki Greece
5. Department of Medicine A; University Hospital of Muenster; Muenster Germany
6. Hematology/Oncology; University Medical Center Freiburg; Freiburg Germany
7. Division of Hematology and BMT; Department of Experimental and Clinical Medical Sciences, Udine University Medical Center; Udine Italy
8. Center for Blood Stem Cell and Bone Marrow Transplant; DKD Helios Clinic Wiesbaden; Wiesbaden Germany
9. First Pavlov State Medical University of Saint Petersburg; Saint Petersburg Russia
10. The Christie NHS Foundation Trust; Manchester United Kingdom
11. Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology; Gliwice Poland
12. Division of Hematology and Bone Marrow Transplantation; Chaim Sheba Medical Center, Tel-Hashomer and Sackler School of Medicine; Ramat Gan Israel