1. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
2. Department of Big Data Strategy, National Health Insurance Service, Wonju, Korea.
3. Department of Preventive Medicine, Gachon University College of Medicine, Incheon, Korea.
4. Department of Information and Statistics, Research Institute of Natural Science, Gyeongsang National University, Jinju, Korea.