Journal of Clinical Epidemiology
Journal of Clinical Epidemiology > 2007 > 60 > 1 > 73-78
Journal of Clinical Epidemiology > 2007 > 60 > 5 > 512-517
Journal of Clinical Epidemiology > 2007 > 60 > 9 > 911-918
Journal of Clinical Epidemiology > 2007 > 60 > 1 > 73-78
Journal of Clinical Epidemiology > 2007 > 60 > 5 > 512-517
Journal of Clinical Epidemiology > 2007 > 60 > 9 > 911-918