1. Microsystems Integration Laboratory, Institute of Electronics Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan 300, ROC
2. Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu 300, Taiwan, ROC
3. Department of Internal Medicine and Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei 10617, Taiwan, ROC
4. Department of Surgery, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan 300, ROC