1. 1) Koizumi H., “Iryosha karano Koe.”:〈http://melit.jp/voices/koizumi/2006/07/〉, MELIT (Medical Literacy For Patients) Web, cited 1 December, 2006.
2. 2) Kohonen T., “Self-Organizing Maps,” Springer, Berlin, 2000.
3. 3) Tokutaka H., Kishida S., Fujimura K., “Jikososhikika Map no Ouyou,” Kaibundo Co., Tokyo, 2005.
4. 4) Saito A., “Koukinyaku Handbook 2006,” Daiichi Pharmaceutical Co., Ltd., 2006.
5. 5) Kanazawa Y., Kawakami J., Hoshi K., Kawamura M., Iwaya K., Sato W., Hamada K., Sato K., Jpn. J. Drug Inform., 9, 124-130 (2007).