1. Department of Endocrinology, Luoyang Central Hospital Affiliated to Zhengzhou University , Luoyang , China
2. Department of Mechanical Engineering and Department of Bioengineering, University of California, Berkeley Slovenia
3. School of Electrical Engineering, Zhengzhou University , Zhengzhou , China
4. Henan Bioengineering Research Center , Zhengzhou , China
5. Department of Surgery, University of California, San Francisco , San Francisco , USA