1. 1) Ministry of Health, Labour and Welfare. “Self-medication zeisei (iryouhi koujo no tokurei) ni tsuite.”: 〈http://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000124853.html〉, cited 22 June, 2017.
2. 2) Japan Federation of Self-Medication Industries, Japan Self-Medication Industry, “Ninchi/Riyouikou ni kansuru seikatsusha ishikichousa.”: 〈https://jsmi.jp/news/2017/0522.pdf〉, cited 22 June, 2017.
3. 3) Ministry of Health, Labour and Welfare. Pharmaceuticals and Medical Devices Safety Information No. 293: 〈http://www1.mhlw.go.jp/kinkyu/iyaku_j/iyaku_j/anzenseijyouhou/293.pdf〉, cited 17 June, 2017.
4. 4) Hasegawa S., Hatahira H., Naganuma M., Shimauchi A., Sasaoka S., Motooka Y., Fukuda A., Abe J., Nakao S., Kato Y., Ohmori T., Iguchi K., Nakamura M., Yakugaku Zasshi, 137, 1301-1311 (2017).
5. 5) Sasaoka S., Hatahira H., Hasegawa S., Motooka Y., Fukuda A., Naganuma M., Umetsu R., Nakao S., Shimauchi A., Ueda N., Hirade K., Iguchi K., Nakamura M., Yakugaku Zasshi, 138, 123-134 (2018).