1. Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin 300060, P.R. China
2. Research Center of Basic Medical Science, Tianjin Medical University, Tianjin 300070, P.R. China