1. Department of Dental Pharmacology and Biophysics, College of Pharmacy, Chung-Ang University, Seoul 156-756, Korea.
2. Department of Oral and Maxillofacial Surgery and Clinical Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 156-756, Korea.
3. Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 156-756, Korea.
4. Department of Oral Physiology and Molecular Biology, School of Dentistry and Research Institute for Oral Biotechnology, Yangsan Campus of Pusan National University, Yangsan 626-870, Korea.