[1] Charite Univ Med Berlin, Dept Dermatol & Allergy, Allergie Centrum Charite ECARF, Charitepl 1, D-10117 Berlin, Germany
[2] Univ Thessaly, Sch Hlth Sci, Fac Med, Dept Immunol & Histocompatibil, Panepistimiou 3, GR-41500 Biopolis, Larissa, Greece
[3] Univ Med Ctr Utrecht, Dept Clin Chem & Haematol, Heidelberglaan 100, NL-3584 CX Utrecht, Netherlands