1. Department of Pharmacology, Brain Korea 21 PLUS Project for Medical Sciences, Severance Biomedical Science Institute; Yonsei University College of Medicine; Seoul 120-752 Korea
2. Department of Ophthalmology; Yonsei University College of Medicine; Seoul 120-752 Korea
3. Department of Computational and Systems Biology; University of Pittsburgh; Pittsburgh PA USA
4. Department of Chemistry; Yonsei University College of Science; Seoul 120-749 Korea
5. Department of Otorhinolaryngology; Yonsei University College of Medicine; Seoul 120-752 Korea
6. Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition; University of Pittsburgh; Pittsburgh PA USA