1. From the Department of Hematology and Department of Internal Medicine and Medical Therapy, University of Pavia Medical School and Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico S Matteo, Pavia, Italy; Protein Engineering Unit, DIBIT IRCCS S Raffaele Hospital, Milan, Italy; Department of Pediatrics and Biomedical Technology, University of Brescia School of Medicine, Brescia, Italy; and Department of Biochemistry, Tufts University School of Medicine, Boston, MA.