1. Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, 132 East Waihuan Road, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong 510006, P. R. China
2. Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, P. R. China
3. Agriculture and Forestry Yan Jiaxian Innovative Class, Fujian Agriculture and Forestry University, Fuzhou, 350002, P.R. China
4. Research Institute of Sun Yat-Sen University in Shenzhen, Shenzhen, 518057, P.R. China