1. Big Data Linkage Division, Health Insurance Review & Assessment Service, Wonju, Korea.
2. Digital Medical Technology Listing Division, Health Insurance Review & Assessment Service, Wonju, Korea.
3. DRG Administration Division, Health Insurance Review & Assessment Service, Wonju, Korea.
4. Center for Research on Big Data Information, Korea Institute for Health and Social Affairs, Sejong, Korea.
5. Division of Data Science, Yonsei University, Wonju, Korea.