1. From the Department of Biomedicine, Experimental Hematology, University Hospital Basel and University of Basel (J.Z., P.L., R.N., R.C.S.), and Diagnostic Hematology, University Hospital Basel (P.L.), Basel, Switzerland; and the Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (M.L.T., A.S., A.W.), and the Department of Hematology, St. Olavs Hospital (A.W.) — both in Trondheim, Norway.