From the Department of Otolaryngology Head and Neck Surgery The 940th Hospital of the Joint Logistics Support Unit of the Chinese PLA 333 Binhenan Road Qilihe District Lanzhou Gansu Province 730050 China;
From the Department of OtolaryngologyeHead and Neck Surgery Second Affiliated Hospital of Lanzhou University No. 82 Cuiyingmen Chengguan District Lanzhou Gansu Province 730030 China;
From the Department of Otolaryngology Head and Neck Surgery The 940th Hospital of the Joint Logistics Support Unit of the Chinese PLA 333 Binhenan Road Qilihe District Lanzhou Gansu Province 730050 China;
From the School of Atmospheric Sciences Lanzhou University No.222 Tianshuinan Road Chengguan District Lanzhou Gansu Province 730000 China;
From the Department of Otolaryngology Head and Neck Surgery The 940th Hospital of the Joint Logistics Support Unit of the Chinese PLA 333 Binhenan Road Qilihe District Lanzhou Gansu Province 730050 China;