Journal of Clinical Epidemiology
Journal of Clinical Epidemiology > 2007 > 60 > 8 > 781.e1-781.e10
Journal of Clinical Epidemiology > 2007 > 60 > 8 > 773-780
Journal of Clinical Epidemiology > 2007 > 60 > 8 > 787.e1-787.e15
Journal of Clinical Epidemiology > 2007 > 60 > 9 > 939-946
Journal of Clinical Epidemiology > 2007 > 60 > 11 > 1123-1126