1. Department of Chemical Engineering and Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
2. Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu 30013, Taiwan, ROC
3. The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
4. Department of Electrical Engineering, Chang-Gung University, Taoyuan 33302, Taiwan, ROC