aDepartment of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University

bBeijing Laboratory of Allergic Diseases, Beijing Municipal Education Commission and Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology

cDepartment of Allergy, Beijing Tongren Hospital, Capital Medical University

dResearch Unit of Diagnosis and Treatment of Chronic Nasal Diseases, Chinese Academy of Medical Sciences, Beijing, China

Correspondence to Luo Zhang, MD, PhD, Department of Otorhinolaryngology Head and Neck Surgery and Department of Allergy, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China. Tel: +86 10 58265719; e-mail: [email protected]