TY - JOUR T1 - CORRECTION JF - The Annals of Family Medicine JO - Ann Fam Med SP - 371 LP - 371 DO - 10.1370/afm.1294 VL - 9 IS - 4 A2 - , Y1 - 2011/07/01 UR - http://www.annfammed.org/content/9/4/371.abstract N2 - ER -