19: Kim JW, Lee CK, Rhee SY, Oh CH, Shim JJ, Kim HJ. Trends in health-care costs
and utilization for inflammatory bowel disease from 2010 to 2014 in Korea: A
nationwide population-based study. J Gastroenterol Hepatol. 2018
Apr;33(4):847-854. doi: 10.1111/jgh.14027. Epub 2018 Feb 6. PMID: 29055148.