1. Center for Evidence‐Based Healthcare TU Dresden Medizinische Fakultät Carl Gustav Carus Dresden Germany
2. University Allergy Center, TU Dresden University Hospital Carl Gustav Carus Dresden Germany
3. ALK‐Abelló Hamburg Germany
4. Department for Otorhinolaryngology TU Dresden, Medizinische Fakultät Carl Gustav Carus Dresden Germany
5. ALK‐Abelló Hørsholm Denmark