1. Gyeongnam Department of Environment & Toxicology, Korea Institute of Toxicology, 17 Jegok-gil, Munsan-eup, Gyeongnam 660-844, Republic of Korea.
2. College of Pharmacy, Pusan National University, Busan 609-735, Republic of Korea.
3. College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul 151-742, Republic of Korea.
4. Department of Agronomy & Medicinal Plant Resources, College of Life Sciences and Natural Resources, Gyeongnam National University of Science and Technology, Jinju 660-758, Republic of Korea.