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The American Journal of Medicine > 2013 > 126 > 2 > 169.e19-169.e26
The American Journal of Medicine > 2011 > 124 > 2 > 95-102
Journal of Clinical Epidemiology > 2009 > 62 > 9 > 998-1000
The American Journal of Medicine > 2013 > 126 > 2 > 169.e19-169.e26
The American Journal of Medicine > 2011 > 124 > 2 > 95-102
Journal of Clinical Epidemiology > 2009 > 62 > 9 > 998-1000