Department of Gastroenterology;
Faculty of Medicine;
Oita University;
Faculty of Medicine;
Hasama Division;
Health Science Center;
Oita University;
General Medicine and Community Health Science;
Hyogo College of Medicine;
Department of Gastroenterology;
Hirosaki University;
Graduate School of Medicine;
Toyama City Medical Association Health Management Center;
Department of Microbiology;
Toho University;
Helicobacter; pylori; Stool; antigen; test; Urea; breath; test; Proton; pump; inhibitor;