Journal of Clinical Epidemiology
Journal of Clinical Epidemiology > 2007 > 60 > 5 > 502-511
Journal of Clinical Epidemiology > 2007 > 60 > 5 > 448-455
Journal of Clinical Epidemiology > 2007 > 60 > 10 > 1029-1033
Journal of Clinical Epidemiology > 2007 > 60 > 11 > 1164-1175
Journal of Clinical Epidemiology > 2007 > 60 > 12 > 1288.e1-1288.e11