Department of Internal Medicine and Healthcare Research Institute;
Healthcare System Gangnam Center;
Seoul National University Hospital;
Seoul 06236;
South Korea;
Department of Internal Medicine and Liver Research Institute;
Seoul National University College of Medicine;
Seoul 03080;
South Korea;
Department of Biostatics;
College of Medicine;
Catholic University of Korea;
Seoul 06591;
South Korea;
Department of Internal Medicine;
CHA Gangnam Medical Center;
CHA University;
Seoul 06135;
South Korea;
Department of Internal Medicine;
Gangnam Severance Hospital;
Yonsei University College of Medicine;
Seoul 06273;
South Korea;
Claim; data; Inflammatory; bowel; disease; Chronic; obstructive; pulmonary; disease; Crohn’s; disease; Ulcerative; colitis;