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Validation of diagnoses of peptic ulcers and bleeding from administrative databases: a multi-health maintenance organization study.

Validation of diagnoses of peptic ulcers and bleeding from administrative databases: a multi-health maintenance organization study. J Clin Epidemiol. 2002 Mar; 55(3):310-3.

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Funded by the NIH National Center for Advancing Translational Sciences through its Clinical and Translational Science Awards Program, grant number UL1TR002541.