1. Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
2. Fuji Research Laboratories, Pharmaceutical Division, Kowa Co. Ltd., 332-1 Ohnoshinden, Fuji, Shizuoka 417-8650, Japan
3. School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea