1. Rising morbidity and mortality in midlife among white non-Hispanic Americans in the 21st century
2. Centers for Disease Control and Prevention (2015) National Center for Health Statistics: Underlying cause of death 1999-2013 on CDC Wonder online database, released. Available at wonder.cdc.gov/ucd-icd10.html. Accessed November 22, 2015
3. Provasnik S (2007) Status of Education in Rural America (NCES 2007-040) (National Center for Education Statistics, Institute of Education Sciences, US Department of Education, Washington, DC)