1. Josep Carreras Leukemia Research Institute (IJC) and School of Medicine, Department of Biomedicine, University of Barcelona, Barcelona, Spain
2. Department of Pediatric Oncology/Hematology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
3. Hematopathology Unit, Department of Anatomic Pathology, Hospital Clinic, IDIBAPS, Barcelona, Spain
4. Research Center for Stem Cell Engineering and National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraka, Japan
5. Instituciò Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain