TY - JOUR T1 - UPDATE ON THE P<sup>4</sup> PROJECT JF - The Annals of Family Medicine JO - Ann Fam Med SP - 86 LP - 86 DO - 10.1370/afm.808 VL - 6 IS - 1 AU - Larry Green Y1 - 2008/01/01 UR - http://www.annfammed.org/content/6/1/86.1.abstract N2 - ER -