TY - JOUR T1 - CORRECTION JF - The Annals of Family Medicine JO - Ann Fam Med SP - 372 LP - 372 DO - 10.1370/afm.881 VL - 6 IS - 4 A2 - , Y1 - 2008/07/01 UR - http://www.annfammed.org/content/6/4/372.abstract N2 - ER -