1. Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250023, China
2. Department of Oncology, Shandong Second Provincial General Hospital, Jinan 250023, China
3. China Key Laboratory of Marine Drugs, The Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
4. Department of Pathology, Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
5. Department of Oncology, 960 Hospital of People’s Liberation Army, Jinan 250031, China
6. Department of Pathology, Navy 971 People’s Liberation Army Hospital, Qingdao 266071, China