1. University Clinic of Respiratory and Allergic Diseases Golnik Golnik Slovenia
2. Department of Dermatology and Allergy Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin Dermatological Allergology Allergie‐Centrum Charité Charité – Universitätsmedizin Berlin Berlin Germany
3. Hematology Department University Medical Centre Ljubljana Ljubljana Slovenia
4. Medical Department for Hematology, Oncology and Tumor Immunology Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Charité – Universitätsmedizin Berlin Berlin Germany