%0 Journal Article %A F Mégraud %T H pylori antibiotic resistance: prevalence, importance, and advances in testing %D 2004 %R 10.1136/gut.2003.022111 %J Gut %P 1374-1384 %V 53 %N 9 %U https://gut.bmj.com/content/gutjnl/53/9/1374.full.pdf