1. Tsumura Research Laboratories; Tsumura & Co.; Ami-machi, Inashiki-gun, Ibaraki Japan
2. Analytical and Pharmaceutical Technology Research Center; Tsumura & Co.; Ami-machi, Inashiki-gun, Ibaraki Japan
3. Department of Dermatology; Tohoku University Graduate School of Medicine; Aoba-ku, Sendai, Miyagi Japan