Japanese Data Center for Hematopoietic Cell Transplantation, University of Basel - University Hospital Basel, University of Leipzig - Institute for Medical Informatics, Statistics and Epidemiology (IMISE), University of Barcelona - Department of Haematology, Medical College of Wisconsin - Center for International Blood and Marrow Transplant Research (CIBMTR), Aichi Medical University, Las Américas Auna - Instituto de Cancerología, The University of Western Australia - Fiona Stanley Hospital, Cairo University - National Cancer Institute, University of Benin - University of Benin Teaching Hospital, Pelé Pequeno Príncipe Research Institute, Hospital de la Princesa - Hematology Department, King Faisal Specialist Hospital and Research Centre - Oncology Center, Università Vita-Salute San Raffaele - San Raffaele Hospital, Hospital Israelita Albert Einstein, Instituto de Previsión Social, British Hospital, Sorbonne-Université, Hospital Civil de Guadalajara «Dr. Juan I. Menchaca», Università Vita-Salute San Raffaele - San Raffaele Hospital, Monash University, University of Amsterdam, Academic Medical Center, Department of Hematology, Medical College of Wisconsin, Wroclaw Medical University, National Taiwan University - National Taiwan University Hospital (NTUH), Aichi Medical University, University of London - Institute of Infection and Immunity, Peking University - Institute of Hematology, University College London - University College London Hospitals NHS Foundation Trust, Kyungpook National University - Kyungpook National University Hospital, Hôpital Necker-Enfants Malades, Keio University - School of Medicine, Medical College of Wisconsin, University of Manitoba, University of Illinois at Chicago, San Raffaele Institute, Federal University of São Paulo (UNIFESP) - Paulista School of Medicine, Sheffield Teaching Hospitals NHS Foundation Trust, Christian Medical College - Department of Clinical Hematology, Peter MacCallum Cancer Centre, The University of Minnesota - Division of Hematology, Medical University of Vienna, Medical University of Graz, Medical College of Wisconsin - Center for International Blood and Marrow Transplant Research (CIBMTR), King Faisal Specialist Hospital and Research Centre - Oncology Center, University of Leipzig and Independent

San Raffaele Institute, EMBT, EMBT, University of Paris-Saclay - Institut Gustave Roussy, Gustave Roussy - Hematology Department, Université Paris Cité, Université Paris Cité, Assistance Publique-Hopitaux de Paris (AP-HP) - Service d’Hematologie-Oncologie, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, University College London, University College London, St. James’s Hospital, University of Leipzig, University of Leipzig, University of Leipzig, University Hospitals Birmingham NHS Foundation Trust, University of Salamanca - Instituto de Investigación Biomédica de Salamanca - Institute for Biomedical Research of Salamanca, Technische Universität München (TUM), IRCCS Humanitas Research Hospital, IRCCS Humanitas Research Hospital, University of Seville - Hospital Universitario Virgen del Rocío, Hospital Clínic de Barcelona, University of Copenhagen - Copenhagen University Hospital, Charles University, University Hospitals Bristol - University Hospitals Bristol NHS Foundation Trust, University of Southampton - Southampton General Hospital, Tel Aviv Sourasky Medical Center, Hebrew University of Jerusalem - Hadassah Medical Center, University Hospital Essen, University Hospital of Schleswig-Holstein, National research Institute of Oncology, Warsaw, Université de Tours, EMBT, Hospital Universitario Puerta de Hierro, CHRU Nancy, Sorbonne University, Utrecht University - University Medical Center (Utrecht) and San Raffaele Institute