TY - JOUR T1 - Practice-based Research Networks (PBRNs) in the United States: Growing and Still Going After All These Years JF - The Journal of the American Board of Family Medicine JO - J Am Board Fam Med SP - 541 LP - 545 DO - 10.3122/jabfm.2015.05.150227 VL - 28 IS - 5 AU - John Hickner AU - Larry A. Green Y1 - 2015/09/01 UR - http://www.jabfm.org/content/28/5/541.abstract N2 - ER -