1 Department of Otolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, Anhui, China; Department of Allergy, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, Anhui, China.
2 Department of Oncology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, Anhui, China.
3 Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China.
4 Department of Otolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, Anhui, China; Department of Allergy, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, Anhui, China. Electronic address: liuyehai@ahmu.edu.cn.