Division of Internal Medicine,Department of Gastroenterology,Gachon University College of Medicine,Gil Medical Center,Inchoen 21565,South Korea;
Department of Laboratory Medicine,Gil Medical Center,Gachon University,Inchoen 21565,South Korea;
Health IT Research Center,Gachon University Gil Hospital,Incheon 21565,South Korea;
Helicobacter pylori; Eradication; Tailored therapy; Conco-mitant therapy regimen;