Scutchfield F Douglas, Pérez Debra Joy, Monroe Judith A, Howard Alex F
National Coordinating Center for Public Health Services and Systems Research, University of Kentucky College of Public Health, Lexington, Kentucky, USA.
Am J Prev Med. 2012 May;42(5 Suppl 1):S1-5. doi: 10.1016/j.amepre.2012.01.027.