1. State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Screening, Department of Biomedical Engineering, School of Engineering, China Pharmaceutical University, No. 639 Longmian Avenue, Jiangning District, Nanjing 211198, China
2. Department of Biomedical Engineering, School of Automation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China