1. Department of Vascular Surgery, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, P.R.China
2. Department of biomedical engineer, General Hospital of Western Theater Command, Chengdu, P.R.China
3. Department of Oncology, General Hospital of Western Theater Command, Chengdu, P.R.China
4. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, P.R.China