1. Department of Otolaryngology‐Head and Neck Surgery The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou China
2. Department of Otolaryngology‐Head and Neck Surgery Guangzhou Women and Children's Medical Center Guangzhou China
3. Department of Pathology Northwestern University Feinberg School of Medicine Chicago Illinois USA
4. Department of Pathology The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou China
5. Department of Allergy The Third Affiliated Hospital of Sun Yat‐Sen University Guangzhou China