Soltermann, A., F. Eigenmann, R. Güller, K. Weber, and P. Komminoth. “Assessment of Helicobacter Pylori Clarithromycin Resistance Mutations in Archival Gastric Biopsy Samples”. Swiss Medical Weekly, vol. 135, no. 2122, June 2005, pp. 327-32, doi:10.4414/smw.2005.10866.