1. From the University Hospital Heidelberg, Heidelberg (J.C.H.), the Department of Dermatology and Allergy, University Hospital, Ludwig Maximilian University of Munich, Munich (M.S.), and the Department of Dermatology, Venereology, and Allergology (M.S.) and the Department of Hematology, Oncology, and Tumor Immunology and the Comprehensive Cancer Center (S.O.), Charité–Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, and the Department of Hematology, Oncology, and Tumor...