1. From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) — both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico “la Maddalena,” Palermo (M.M.), and Dipartimento di...