Guangming Wang, Shaomin Zhang*, Shurong Dong*, Dong Lou, Lie Ma, Xiachuan Pei1,Hongsheng Xu, Umar Farooq, Wei Guo, Jikui Luo*, Stretchable Optical Sensing Patch System Integrated Heart Rate, Pulse Oxygen Saturation and Sweat pH Detection, IEEE Transactions on Biomedical Engineering,2018, PP(99):1-1