Akiyo Sasaki-Otomaru, Kyoko Saito, Kotaro Yamasue, Osamu Tochikubo, Yuka Kanoya. "Relationship of sleep and activity, assessed via a wristwatch-type pulsimeter with an accelerometer, with health status in community-dwelling older adults: A preliminary study." PLoS ONE, 2025. doi:10.1371/journal.pone.0317524