1. Ph.D. Student, Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
2. Ph.D. Research Assistant, Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
3. Master’s Student, Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
4. Professor, Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea