1. Department of Otorhinolaryngology, Head and Neck Surgery; Section of Rhinology and Allergy; University Hospital Marburg; Philipps-Universität Marburg; Marburg Germany
2. Department of Otolaryngology; Head and Neck Surgery; Beijing TongRen Hospital; Capital Medical University; Beijing China
3. Beijing Key Laboratory of Nasal Diseases; Beijing Institute of Otolaryngology; Beijing China
4. Department of Allergy; Beijing TongRen Hospital; Capital Medical University; Beijing China
5. Center for Rhinology and Allergology; Wiesbaden Germany