1. Medical Department of National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
2. Department of Pathology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
3. Department of Oncology, Shouguang Hospital of Traditional Chinese Medicine, Weifang 262700, P.R. China