1. College of Korean Medicine, Gachon University, Seongnam 13120, Korea
2. Department of Medicine, University of Ulsan College of Medicine, Seoul 05505, Korea
3. Institute of Natural Products, Korea Institute of Science and Technology (KIST), Gangneung 210-340, Korea
4. Department of Food Science and Biotechnology, College of Life Science, CHA University, Gyeonggi 443-742, Korea
5. Department of Food Science and Biotechnology, Kyonggi University, Suwon 443-760, Korea