Tapani Ruutu1, Ronald Brand2*, Anja van Biezen2*, Vanderson Rocha3*, Anna Sureda4*, André Tichelli5*, Hermann Einsele6*, Giorgio Dini7*, Marco Bregni8*, Laurent Garderet9*, Jane Apperley10*, Alois Gratwohl5*, Dietger Niederwieser11* and Theo de Witte12*
1Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland
2Department of Medical Statistics & Bioinformatics, Leiden University Medical Centre, Leiden, Netherlands
3Department of Hematology - BMT, Hopital St. Louis, Paris, France
4Clinical Hematology Division, Hospital Santa Creu i Sant Pau, Barcelona, Spain
5Hematology, University Hospital, Basel, Switzerland
6Medizinische Klinik und Poliklinik II, Universitätsklinik Wuerzburg, Wuerzburg, Germany
7Institute G. Gaslini, Genova, Italy
8San Raffaele Scientific Institute, Milan, Italy
9Department of Hematology, Hopital Saint Antoine, Paris, France
10Department of Haematology, Imperial College, London, United Kingdom
11Division of Haematology & Oncology, University Hospital Leipzig, Leipzig, Germany
12Department of Hematology, Radboud University - Nijmegen Medical Centre, Nijmegen, Netherlands