A patch-type wireless forehead pulse oximeter for SpO2 measurement. - Afreen Azhari; Shusuke Yoshimoto; Toshikazu Nezu; Hirokazu Iida; Hiroki Ota; Yuki Noda; Teppei Araki; Takafumi Uemura; Tsuyoshi Sekitani; Katsuyuki Morii (BioCAS, 2017)