6 Hospital Gustavo Fricke, Pediatrics, Viña del Mar, Chile.
7 Department of Hematology-Oncology, Hospital de Pediatría S.A.M.I.C. "Prof. Dr. Juan P. Garrahan", Buenos Aires, Argentina.
8 Department of Pediatric Hematology and Oncology, IRCCS Ospedale Pediatrico Bambino Gesù, Catholic University of the Sacred Heart, Rome, Italy.
9 Department of Genetics, Hôpital Universitaire Robert Debré, AP-HP and Université Paris-Cité, Paris, France.
10 Department of Pediatric Hematology and Oncology, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic.
11 Pediatric Oncology, Princess Maxima Center for Pediatric Oncology, Utrecht, the Netherlands.