1. Department of General Surgery Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor Nanfang Hospital First Clinical Medical College Southern Medical University Guangzhou 510515 China
2. Guangdong Engineering Research Center for Translation of Medical 3D Printing Application Guangdong Provincial Key Laboratory of Medical Biomechanics Department of Human Anatomy School of Basic Medical Sciences Southern Medical University Guangzhou 510515 China
3. Biomaterials Research Center School of Biomedical Engineering Southern Medical University Guangzhou 510515 China