1. From the Division of Hematology, Oncology, and Hemostaseology, Department of Children and Adolescents, Angioedema Center, University Hospital Frankfurt (E.A.-P.), and the Fraunhofer Institute for Molecular Biology and Applied Ecology, Translational Medicine and Pharmacology (J. Graff), Frankfurt, the Department of Dermatology and Allergy, Charité–Universitätsmedizin Berlin, Berlin (M. Magerl, M. Maurer), and the Department of Otorhinolaryngology and Head and Neck Surgery, Ulm University Medical Center,...