Glupczynski, G., Andersen, L., Lopez-Brea, M., & Megraud, F. (1998). Toward standardisation of antimicrobial susceptibility testing of H-pylori: Preliminary results by a European multicentre study group. Gut (English Edition) : an international journal of gastroenterology & hepatology, 43, A47-A47. https://doi.org/10.1136/gut.43.2008.S47 (Original work published 1998)