Effectiveness of Quadruple Therapy Using Lansoprazole, Instead of Omeprazole, in Curing Helicobacter pylori Infection von de Boer, Wink A., van Etten, Ruud J. X. M., Lai, J. Y. L., Schneeberger, Peter M., van De Wouw, Branka A. M., Driessen, Willem M. M.

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