T. Zuberbier, T. Zuberbier Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité-Universitätsmedizin Berlin, Germany Search for more papers by this author M. Balke, M. Balke Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité-Universitätsmedizin Berlin, Germany Search for more papers by this author M. Worm, M. Worm Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité-Universitätsmedizin Berlin, Germany Search for more papers by this author G.