1. 1) “The Japanese Pharmacopeia Sixteenth Edition,” Hirokawa Shoten, Tokyo, 2011, A141-142.
2. 2) “The United States Pharmacopeia 37th Edition,” 2014, pp. 1021-1022.
3. 3) Shimizu H., “Textbook of Modern Dermatology,” Nakayama Shoten Co., Ltd., Tokyo, 2010, pp. 73-75.
4. 4) Horisawa E., PHARM TECH JAPAN, 29, 2765-2769 (2013).
5. 5) Horisawa E., Akatsuka M., BIO Clinica, 3(Suppl.), 114-121 (2014).