PT - JOURNAL ARTICLE AU - Werner, James J. TI - Measuring the Impact of Practice-based Research Networks (PBRNs) AID - 10.3122/jabfm.2012.05.120176 DP - 2012 Sep 01 TA - The Journal of the American Board of Family Medicine PG - 557--559 VI - 25 IP - 5 4099 - http://www.jabfm.org/content/25/5/557.short 4100 - http://www.jabfm.org/content/25/5/557.full SO - J Am Board Fam Med2012 Sep 01; 25