These authors contributed equally: John E. Levine, Gérard Socié.

Center for Hematologic Malignancies, Oregon Health and Science University, Knight Cancer Institute, Portland, OR, USA

Gabrielle Meyers & Richard T. Maziarz

BMT & Cellular Therapy Program, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin and Center for International Blood and Marrow Transplant Research, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA

Mehdi Hamadani

Center for International Blood and Marrow Transplant Research, Department of Medicine, Medical College of Wisconsin, and Division of Biostatistics, Medical College of Wisconsin, Milwaukee, WI, USA

Michael Martens

Division of Leukemia, Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical, Duarte, CA, USA

Haris Ali

Centre Hospitalier Universitaire de Nantes, Nantes, France

Patrice Chevallier

Division of Hematology, The Ohio State University Comprehensive Cancer Center – The James, Columbus, OH, USA

Hannah Choe

MSK Kids Stem Cell Transplantation and Cellular Therapies, Memorial Sloan Kettering Cancer Center, New York, NY, USA

Andrew C. Harris

Universitätsklinikum Regensburg, Regensburg, Germany

Ernst Holler

Xenikos BV, Nijmegen, The Netherlands

Eric van Hooren, Willem Klaassen & Ypke van Oosterhout

National Heart, Lung, and Blood Institute, Bethesda, MD, USA

Eric Leifer

H. Lee Moffitt Cancer Center, Tampa, FL, USA

Lia Perez

Division of Oncology, BMT and Leukemia Section, Washington University School of Medicine, St. Louis, MO, USA

Iskra Pusic

Universitätsklinikum Münster (UKM), Münster, Germany

Matthias Stelljes

Department of Hematology, Radboud University Medical Center, Nijmegen, The Netherlands

Walter van der Velden

Universitair Medisch Centrum Groningen, Groningen, The Netherlands

Emanuele Ammatuna

Hematology Department, CHU Lille, Lille, France

David Beauvais

Institut de Cancérologie Lucien Neuwirth, Saint-Priest-en-Jarez, France

Jérôme Cornillon

Universitaetsklinikum Carl Gustav Carus Dresden, Dresden, Germany

Johannes Schetelig

The Emmes Company, Rockville, MD, USA

Jennifer Romeril

Blood and Marrow Transplantation & Cellular Therapy Program, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA

Margaret L. MacMillan

Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA

John E. Levine

Hematology Transplantation, Hospital St Louis and University Paris Cité, Paris, France

Gérard Socié