TY - JOUR T1 - CORRECTION JF - The Annals of Family Medicine JO - Ann Fam Med SP - 274 LP - 274 DO - 10.1370/afm.856 VL - 6 IS - 3 A2 - , Y1 - 2008/05/01 UR - http://www.annfammed.org/content/6/3/274.abstract N2 - ER -