[1] Charite Univ Med Berlin, Klin Padiatrie mS Pneumol Immunol & Intens Med, Sekt kinderallergol Studienzentrum, Berlin, Germany
[2] Charite Univ Med Berlin, Allergol & Immunol, Klin Dermatol Venerol & Allergol, Berlin, Germany
[3] Freien Univ Berlin, Berlin, Germany
[4] Humboldt Univ, Berlin, Germany