1. Department of Conservative Dentistry, Dental Research Institute, Seoul National University Dental Hospital, Seoul National University School of Dentistry, Seoul, Republic of Korea.
2. Department of Conservative Dentistry, School of Stomatology, Shandong University, Jinan, China.
3. Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada.
4. Department of Biology, Siena College, Loudonville, New York.
5. Department of Advanced General Dentistry, Yonsei University Medical Center, Oral Science Institute, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
6. Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea.
7. Division of Endodontology, Department of Oral Health and Diagnostic Sciences, University of Connecticut Health Center, School of Dental Medicine, Farmington, Connecticut.