1. Otorhinolaryngology, Weifang Hospital of Traditional Chinese, Weifang, 261000 Shandong, China
2. General Surgery, Weifang Hospital of Traditional Chinese, Weifang, 261000 Shandong, China
3. Ultrasonography Department, Weifang Hospital of Traditional Chinese, Weifang, 261000 Shandong, China
4. First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000 Shandong, China