1. Department of Health Services Research and Administration, College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
2. Center for Health Policy Analysis and Rural Health Research, College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
3. Nebraska Public Health Practice-Based Research Network, College of Public Health, University of Nebraska Medical Center, Omaha, NE, USA
4. Department of Community Medicine and Population Health, College of Community Health Sciences, University of Alabama, Tuscaloosa, AL, USA