[1] Tech Univ Munich, Klin & Poliklin Dermatol & Allergol Biederstein, D-80802 Munich, Germany
[2] Univ Munich, AllergieZentrum, Klin & Poliklin Dermatol & Allergol, Munich, Germany
[3] Med Univ Graz, Dermatol Klin, Graz, Austria
[4] Univ Spital, Allergol Poliklin, Basel, Switzerland
[5] Univ Klinikum Munster, Klin Hautkrankheiten, Munster, Germany
[6] Ruhr Univ Bochum, St Josef Hosp, Univ Klinikum, Klin Dermatol Venerol & Allergol, Bochum, Germany
[7] Univ Med Gottingen, Klin Dermatol Venerol & Allergol, Gottingen, Germany
[8] Univ Freiburg Klinikum, Klin Dermatol & Venerol, Freiburg, Germany
[9] Marienhospital Bonn, Kinderklin, Bonn, Germany
[10] Univ Klinikum Giessen & Marburg, Klin Dermatol & Allergol, Marburg, Germany
[11] Univ Freiburg Klinikum, Klin Dermatol & Venerol, Dokumentat Zentrum Schwerer Hautreakt, Freiburg, Germany
[12] Kinder & Jugendkrankenhaus Bult, Hannover, Germany
[13] Zentrum Rhinol & Allergol, Wiesbaden, Germany
[14] Bundesinst Arzneimittel & Medizinprodukte, Bonn, Germany
[15] Univ Marburg, Inst Theoret Chirurg, Marburg, Germany
[16] Univ Klinikum Wurzburg, Klin & Poliklin Dermatol & Allergol, Allergiezentrum Mainfranken, Wurzburg, Germany
[17] Univ Leipzig, Klin Dermatol Venerol & Allergol, D-04109 Leipzig, Germany
[18] Hannover Med Sch, Klin Dermatol Allergol & Venerol, D-30623 Hannover, Germany
[19] Charite, Klin Dermatol Venerol & Allergol, D-13353 Berlin, Germany
[20] RTWH Aachen, Klin Dermatol & Allergol, Aachen, Germany
[21] HNO Univ Klin Mannheim, Mannheim, Germany