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Journal of Clinical Epidemiology > 2015 > 68 > 7 > 792-802
Journal of Clinical Epidemiology > 2011 > 64 > 12 > 1277-1282
Journal of General Internal Medicine > 2004 > 19 > 1 > 51-56
Journal of Clinical Epidemiology > 2015 > 68 > 7 > 792-802
Journal of Clinical Epidemiology > 2011 > 64 > 12 > 1277-1282
Journal of General Internal Medicine > 2004 > 19 > 1 > 51-56