1. Institut Gustave Roussy, Villejuif, France; Integraal Kankercentruum Nederland, Grongingen; Compusense, Voorhout; Netherlands Cancer Institute, Amsterdam, the Netherlands; Imperial College Healthcare NHS Trust, London, United Kingdom; Institut Jules Bordet; Organisation of European Cancer Institutes, Brussels, Belgium; Instituto Português de Oncologia do Porto, Porto, Portugal; European Group for Blood and Marrow Transplantation, Barcelona, Spain; and Karolinska Institutet, Stockholm, Sweden