1. 1) Supreme Court of Japan: 〈http://www.courts.go.jp/saikosai/vcms_lf/201405izitoukei1.pdf〉, cited 2 June, 2014.
2. 2) Ministry of Health, Labour and Welfare. “Yakugai wo manabou,” 2013: 〈http://www.mhlw.go.jp/bunya/iyakuhin/yakugai/data/yakugai_print.pdf〉, cited 4 July, 2014.
3. 3) Katahira K., Bulletin of School Medicine, 26(2), 125-132 (2009).
4. 4) The Ministry of Justice: 〈http://www.moj.go.jp/content/000081102.pdf〉, cited 16 December, 2013.
5. 5) Ministry of Health, Labour and Welfare: 〈http://www.mhlw.go.jp/shingi/2010/04/dl/s0428-8a.pdf〉, cited 16 December, 2013.