7Lam SK, Talley NJ. Report of the 1997 Asia Pacific Consensus Conference on the management of Helicobacter pylori infection. J Gastroenterol Hepatol, 1998, 13: 1～12.
8Czinn SJ. What is the role for vaccination in Helicobacter pylori? Gastroenterology, 1997, 113 (6 suppl): S149～S153.
9Suerbaum S, Josenhans C. Virulence factors of Helicobacter pylori: implications for vaccine development. Mol Med Today, 1999, 5: 32～39.
10Ling TK, Cheng AF, Sung JJ, Yiu PY, Chung SS.An increase in Helicobacter pylori strains resistant to metronidazole: a five-year study. Helicobacter, 1996, 1: 57～61.
