1. Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul, South Korea.
2. Clinical Research Division, Korea Institute of Oriental Medicine, Daejeon, South Korea.
3. Department of Oral Pathology, School of Dentistry, Chonbuk National University, Jeonju, South Korea.
4. International Ginseng and Herb Research Institute, Geumsan, South Korea.