©Kazuki Matsumoto, Chihiro Sutoh, Kenichi Asano, Yoichi Seki, Yuko Urao, Mizue Yokoo, Rieko Takanashi, Tokiko Yoshida, Mari Tanaka, Remi Noguchi, Shinobu Nagata, Keiko Oshiro, Noriko Numata, Motohisa Hirose, Kensuke Yoshimura, Kazue Nagai, Yasunori Sato, Taishiro Kishimoto, Akiko Nakagawa, Eiji Shimizu. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 17.12.2018.
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