1. Central Research LaboratoryBeijing Center for Disease Preventive Medical Research, Beijing 100013, China
2. Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
3. Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an 710126, Shaanxi, China
4. Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China