1. Department of Biomedical Engineering, Shenzhen University Medicine School, Shenzhen University, Shenzhen 518060, China
2. Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
3. Central Laboratory, Peking University School of Stomatology, Beijing 100081, China