1. Guangdong Provincial Key Laboratory of Sensing Technology and Biomedical Instrument, School of Biomedical Engineering Shenzhen Campus of Sun Yat‐Sen University Shenzhen 518107 P. R. China
2. Department of Biomedical Engineering The Hong Kong Polytechnic University Hunghom Hong Kong 999077 P. R. China
3. Department of Clinical Laboratory The Seventh Affiliated Hospital of Sun Yat‐Sen University Shenzhen 518107 P. R. China