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Graham, D Y., A R. Opekun, M S. Osato, H M T. El-Zimaity, C K. Lee, Y. Yamaoka, W A. Qureshi, M. Cadoz, and T P. Monath. Challenge Model for Helicobacter Pylori Infection in Human Volunteers. Copyright 2004 by Gut, 2004.

Graham, D Y., et al. Challenge Model for Helicobacter Pylori Infection in Human Volunteers. Copyright 2004 by Gut, 2004.