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Guidance for trials in Helicobacter pyloriinfection
  1. Médico Adjunto,
  2. Servivio de Aparato Digestivo,
  3. Hospital Miguel Servet,
  4. Zaragoza 50009, Spain

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Editor,—Your prestigious journal has recently published a supplement on guidelines for clinical trials inHelicobacter pylori infection (Gut1997;41(suppl 2):S1–23). I welcome these guidelines, and as it would be expected from the authors’ experience and background, the term excellent would surely be adequate to describe the three different papers contained in the supplement. There are, however, at least two key points that merit discussion before these guidelines are generally …

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