1. Institute of Urology, The Third Affiliated Hospital of Shenzhen University, Luohu Hospital Group, Shenzhen 518000, P. R. China
2. Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, Pasadena, California 91125, United States
3. School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, P. R. China
4. South China Hospital, Shenzhen University, Shenzhen 518116, P. R. China