%0 Journal Article %T Smartphone viewing distance and sleep: an experimental study utilizing motion capture technology %A Kazuo Tsubota %A Masaru Mimura %A Michitaka Yoshimura %A Momoko Kitazawa %A Taishiro Kishimoto %A Yasuhiro Maeda %J Archive of "Nature and Science of Sleep". %D 2017 %R 10.2147/NSS.S123319 %K smartphone %K sleep %K blue light %K distance %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5349506/