1. Hematology, IRCCS Azienda Ospedaliera Universitaria, San Martino–IST Istituto Nazionale per la Ricerca sul CancroGenova Italy
2. Hematology and Transplant Center, Ospedale Oncologico di Riferimento Regionale “Armando Businco”, Azienda Ospedaliera BrotzuCagliari Italy
3. Hematology, Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, University of Southern California Keck School of MedicineLos Angeles California