1. From the Hematology Department, University Hospitals Leuven, KU Leuven, Leuven (J.M.), and the Section of Hematology, Cliniques Universitaires Saint-Luc, Brussels (X.P.) — both in Belgium; the Hematology Department, Henri Mondor Hospital, Assistance Publique–Hôpitaux de Paris (AP-HP) and University Paris-Est-Créteil, Créteil (C.C.), and AP-HP Hôpital Paul Brousse, Villejuif (F.S.) — all in France; the Medical University of Vienna, General Hospital, Vienna (P.J.); Shire, Wayne, PA (M.U., S.V.); Shire,...