Journal of Clinical Epidemiology
Journal of Clinical Epidemiology > 2006 > 59 > 1 > 90-93
Journal of Clinical Epidemiology > 2006 > 59 > 3 > 281-289
Journal of Clinical Epidemiology > 2006 > 59 > 11 > 1207-1212
Journal of Clinical Epidemiology > 2006 > 59 > 1 > 90-93
Journal of Clinical Epidemiology > 2006 > 59 > 3 > 281-289
Journal of Clinical Epidemiology > 2006 > 59 > 11 > 1207-1212