1. Department of Pathology Hebei Medical University Fourth Affiliated Hospital and Hebei Provincial Tumor Hospital Shijiazhuang China
2. Department of Pathology Brigham and Women's Hospital and Harvard Medical School Boston Massachusetts
3. Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
4. Department of Pathology Zhongshan Hospital, Fudan University Shanghai China