1. Graduate student, Department of Orthodontics, Graduate School, Seoul National University, Seoul, Korea.
2. Data Scientist, HuTom, Seoul, Korea.
3. Professor, Department of Statistics, Korea University, Seoul, Korea.
4. Assistant Professor, Assistant Graduate Program Director, Department of Orthodontics, College of Dentistry, University of Florida, Gainesville, Fla.
5. Professor, Department of Orthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea.