Journal of Clinical Epidemiology
Journal of Clinical Epidemiology > 2007 > 60 > 3 > 294-299
Journal of Clinical Epidemiology > 2007 > 60 > 6 > 634-642
Journal of Clinical Epidemiology > 2007 > 60 > 10 > 1040-1045
Journal of Clinical Epidemiology > 2007 > 60 > 3 > 294-299
Journal of Clinical Epidemiology > 2007 > 60 > 6 > 634-642
Journal of Clinical Epidemiology > 2007 > 60 > 10 > 1040-1045