Journal of Clinical Epidemiology
Journal of Clinical Epidemiology > 2012 > 65 > 5 > 497-502
Journal of Clinical Epidemiology > 2012 > 65 > 7 > 764-777
Journal of Clinical Epidemiology > 2012 > 65 > 8 > 897-905
Journal of Clinical Epidemiology > 2012 > 65 > 11 > 1227-1235