1. Biotherapy Center, Qingdao Central Hospital, The Second Affiliated Hospital of Qingdao University, Qingdao, Shandong 266042, P.R. China
2. Department of Pathology, Qingdao Central Hospital, The Second Affiliated Hospital of Qingdao University, Qingdao, Shandong 266042, P.R. China
3. Department of Pathology, Qingdao Cancer Hospital, The Second Affiliated Hospital of Qingdao University, Qingdao, Shandong 266042, P.R. China
4. Department of Breast Surgery, Qingdao Central Hospital, The Second Affiliated Hospital of Qingdao University, Qingdao, Shandong 266042, P.R. China
5. Anorectal Department, Qingdao Central Hospital, The Second Affiliated Hospital of Qingdao University, Qingdao, Shandong 266042, P.R. China