[1] Univ Spital Zurich, Dermatol Klin, Zurich, Switzerland
[2] Charite Univ Med Berlin, Allergie Ctr Charite, Klin Padiatrie Schwerpunkt Pneumol & Immunol, Berlin, Germany
[3] Univ Med Gottingen, Abt Dermatol & Venerol, Gottingen, Germany
[4] Univ Jena, Innere Med Klin 1, Jena, Germany
[5] Hannover Med Sch, Klin Poliklin Dermatol & Venerol, Hannover, Germany
[6] Paracelsus Med Privatuniv, Univ Klin Kinder & Jugendheilkunde, Salzburger Landeskliniken, Salzburg, Austria
[7] Paul Ehrlich Inst, Abt Allergol, D-6070 Langen, Germany
[8] Allergie & Asthma Zentrum Westend, Berlin, Germany
[9] DRK Kliniken Westend, Hedwig von Rittberg Zentrum, Berlin, Germany
[10] Univ Erlangen Nurnberg, Med Klin 1, D-8520 Erlangen, Germany
[11] Johannes Gutenberg Univ Mainz, Univ Med, Hautklin, Mainz, Germany
[12] Med Univ Wien, Univ Klin Kinder & Jugendheilkunde, Vienna, Austria
[13] Charite Univ Med Berlin, Allergie Ctr Charite, Klin Dermatol Venerol & Allergol, Berlin, Germany