共 2 条
[1]
Clarithromycin-resistant Helicobacter pylori in patients with duodenal ulcer in the United States. Vakil N,Hahn B,McSorley D. The American journal of Gastroenterology . 1998
[2]
An increase in Helicobacter pylori strains resistant to metronidazole: a five-year study. Ling TK,Cheng AF,Sung JJ,et al. Helicobacter . 1996