TY - JOUR T1 - Measuring the Impact of Practice-based Research Networks (PBRNs) JF - The Journal of the American Board of Family Medicine JO - J Am Board Fam Med SP - 557 LP - 559 DO - 10.3122/jabfm.2012.05.120176 VL - 25 IS - 5 AU - James J. Werner Y1 - 2012/09/01 UR - http://www.jabfm.org/content/25/5/557.abstract N2 - ER -