TY - JOUR T1 - CORRECTION JF - The Annals of Family Medicine JO - Ann Fam Med SP - 563 LP - 563 DO - 10.1370/afm.662 VL - 4 IS - 6 A2 - , Y1 - 2006/11/01 UR - http://www.annfammed.org/content/4/6/563.abstract N2 - ER -