Unobtrusive Sensing and Wearable Devices for Health Informatics - Ya-Li, Z; Xiao-Rong, D; Poon, CCY; Lo, BPL; Heye, Z; Xiao-Lin, Z; Guang-Zhong, Y; Ni, Z; Yuan-Ting, Z (Biomedical Engineering, IEEE Transactions on, 2014)