1. Department of Dermatology and Allergy; Allergie-Centrum-Charité; Charité - Universitätsmedizin Berlin; Berlin Germany
2. Department of Clinical Allergology; Russian Medical Academy of Postgraduate Education; Moscow Russia
3. Department of Dermatology; Hospital del Mar; Institut Mar d′Investigacions Mèdiques IMIM; Universitat Autònoma Barcelona; Barcelona Spain
4. Cutaneous Allergy; St John's Institute of Dermatology; St Thomas' Hospital; London UK
5. Service de Dermatologie et Allergologie; Hôpital Tenon; Paris France
6. Klinika Medicinskoy Immunologii I Allergologii; Smolensk Russia