1. The First People’s Hospital of Foshan, Foshan, Guangdong, China
2. Cancer Hospital of Shantou University Medical College, Shantou, Guangdong, China
3. Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong, China
4. The People’s Hospital of Zhongshan, Zhongshan, Guangdong, China