ZHEN-HUA, Z.; DE-QIANG, H.; YONG, X.; LIN-LIN, L.; NONG-HUA, L. Characterization of 23S RRNA Gene Mutation in Primary and Secondary Clarithromycin-Resistant Helicobacter Pylori Strains from East China. Turkish Journal of Gastroenterology 2013, 24, 5-9.