1. Department of Physiology, Wonkwang Digestive Disease Research Institute, Wonkwang University School of Medicine, Iksan, Korea
2. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
3. Integrated Major in Innovative Medical Science, Seoul National University Graduate School, Seoul, Korea
4. Sanbon Good Breath Clinic, Gunpo, Korea
5. Diversity Committee of the Korean Society of Gastroenterology, Seoul, Korea