The New England Journal of Medicine Downloaded from nejm.org at PENN STATE UNIVERSITY on May 9, 2012. For personal use only. No other uses without permission. Copyright © 1991 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at PENN STATE UNIVERSITY on May 9, 2012. For personal use only. No other uses without permission. Copyright © 1991 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at PENN STATE UNIVERSITY on May 9, 2012. For personal use only. No other uses without permission. Copyright © 1991 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at PENN STATE UNIVERSITY on May 9, 2012. For personal use only. No other uses without permission. Copyright © 1991 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at PENN STATE UNIVERSITY on May 9, 2012. For personal use only. No other uses without permission. Copyright © 1991 Massachusetts Medical Society. All rights reserved.

The New England Journal of Medicine Downloaded from nejm.org at PENN STATE UNIVERSITY on May 9, 2012. For personal use only. No other uses without permission. Copyright © 1991 Massachusetts Medical Society. All rights reserved.

Helicobacter pylori and peptic ulcer disease.

The New England Journal of Medicine Downloaded from nejm.org at PENN STATE UNIVERSITY on May 9, 2012. For personal use only. No other uses without per...
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