Long-term therapeutic effect of triple therapy consisted of omeperazole, clarithromycin and amoxycillin in children with Helicobacter pylori infection and approach to re-treatment after failure of the treatment是什么意思 Long-term therapeutic effect of triple therapy consisted of omeperazole, clarithromycin and amoxycillin in children with Helicobacter pylori infection and approach to re-treatment after failure of the treatment怎么读