1. From the Department of Colorectal Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, China
2. Department of Biochemistry, Medical College of Shaoguan University, Shaoguan, Guangdong Province 512026, China
3. Department of Nursing, Medical College of Shaoguan University, 108 Xinhua South Road, Wujiang District, Shaoguan, Guangdong 512026, China
4. Department of Oncology, The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China