1. Section of Infectious Disease, Department of Medicine, Boston Medical Center, Boston, MA, USA.
2. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
3. Artificial Intelligence and Big-Data Convergence Center, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.
4. Department of Preventive Medicine, Gachon University College of Medicine, Incheon, Korea.