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Contributors AR and LM drafted the paper. All authors provided critiques of the intellectual content to produce the final version.
Funding This work was supported in part by the VA HSR&D Center of Excellence on Implementing Evidence-Based Practice, Center grant #HFP 04-148, VA HSR&D PPO# 09-298, and AHRQ grant R18 HS017902. Dr Fairbanks is supported by a NIH Career Development Award from the National Institute of Biomedical Imaging and Bioengineering (K08-EB009090). Dr Saleem is supported by a VA HSR&D Research Career Development Award (CDA 09-024-1).
Competing interests None.
Provenance and peer review Commissioned; internally peer reviewed.
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