1. 1) The Ministry of Health, Labour and Welfare: 〈http://www.mhlw.go.jp/file/05-Shingikai-11121000-Iyakushokuhinkyoku-Soumuka/0000153575.pdf〉, cited 24 June, 2019.
2. 2) The Ministry of Health, Labour and Welfare: 〈https://www.mhlw.go.jp/file/04-Houdouhappyou-11121000-Iyakushokuhinkyoku-Soumuka/vision_1.pdf〉, cited 24 June, 2019.
3. 3) Kuriyama T., Shiromukai K., Masui R., Kitakoshi K., Matsuyama N., Yakugaku Zasshi, 139, 529-532 (2019).
4. 4) Omori M., Yakugaku Zasshi, 139, 525-527 (2019).
5. 5) Saito M., Yakugaku Zasshi, 136, 245-249 (2016).