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The PURLs Surveillance System was developed with support from Grant Number UL1RR024999 from the National Center for Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center for Research Resources or the National Institutes of Health.
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Reprinted with permission from the Family Physicians Inquiries Network and The Journal of Family Practice. 2012;61:673-674.