1. 1) e-Gov: <http://law.e-gov.go.jp/announce/H18HO098.html>, cited 15 November, 2010.
2. 2) Ministry of Health, Labour and Welfare: <http://www.mhlw.go.jp/topics/2006/02/tp0201-2.html>, cited 15 November, 2010.
3. 3) Tanimizu M., Kawamura S., Narimoto K., Fujii T., Takaoka S., Naga J., Kikuuchi Y., Miyawaki S., Funada C., Matsuhisa T., Gan to Kagaku Ryoho, 34(Suppl. II), 170-174 (2007).
4. 4) Tanimizu M., Kawamura S., Kikuuchi Y., Funada C., Kogure T., Matsuhisa T., Iyaku Journal, 44(8), 97-103 (2008).
5. 5) Mutou M., Chiryo, 90, 716-720 (2008).