1. Department of Pathology, Cancer Hospital of China Medical University; Liaoning Cancer Hospital and Institute; Shenyang China
2. Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Key Laboratory of Cancer Etiology and Prevention; Liaoning Provincial Education Department; China Medical University; Shenyang China
3. West Virginia University Cancer Institute; West Virginia University; Morgantown WV USA