1. From the Department of Medicine (M.W.v.B., D.D., J.M., B.C.B.), University Hospital Bruderholz, Bruderholz, Switzerland; Department of Research (M.W.v.B., D.D., B.C.B.), University Hospital Basel, Basel, Switzerland; Institute of Pathology (M.M.), University of Hamburg-Eppendorf, Hamburg, Germany; and Cantonal Institute of Pathology (G.C.), Liestal, Switzerland.