TY - JOUR T1 - CORRECTION JF - The Annals of Family Medicine JO - Ann Fam Med SP - 84 LP - 84 DO - 10.1370/afm.1081 VL - 8 IS - 1 A2 - , Y1 - 2010/01/01 UR - http://www.annfammed.org/content/8/1/84.abstract N2 - ER -