Unconstrained Monitoring of Biological Signals Using an Aortic Pulse Wave Sensor. - Naoki Hagiyama; Akihisa Mito; Harutoyo Hirano; Zu Soh; Etsunori Fujita; Yumi Ogura; Ryuichi Uchikawa; Shigehiko Kaneko; Ryuji Nakamura; Noboru Saeki; Masashi Kawamoto; Masao Yoshizumi; et al. (EMBC, 2018)