Upper-Arm Photoplethysmographic Sensor with One-Time Calibration for Long-Term Blood Pressure Monitoring oleh Ching-Fu Wang, Ting-Yun Wang, Pei-Hsin Kuo, Han-Lin Wang, Shih-Zhang Li, Chia-Ming Lin, Shih-Chieh Chan, Tzu-Yu Liu, Yu-Chun Lo, Sheng-Huang Lin, You-Yin Chen