Freire Kimberley, Davis Rebecca, Umble Karl, Menkens Anne
Department of Health Behavior & Health Education, School of Public Health, University of North Carolina at Chapel Hill, NC 27599, USA.
J Public Health Manag Pract. 2008 Jan-Feb;14(1):76-9. doi: 10.1097/01.PHH.0000303417.98765.cc.