1. The Stefan Angeloff Institute of Microbiology Bulgarian Academy of Sciences Sofia Bulgaria
2. MTA‐ELTE Immunology Research Group Eötvös Loránd University Budapest Hungary
3. Allergology Clinic Alexander's University Hospital Sofia Bulgaria
4. Biosystems Ltd Sofia Bulgaria
5. Department of Immunology Eötvös Loránd University Budapest Hungary
6. National Institute of Immunology Sofia Bulgaria