- Epidemiology and pathophysiology of diverticular disease.Clin Colon Rectal Surg. 2009; 22: 141-146
- Trends in dietary fiber intake in the United States, 1999-2008.J Acad Nutr Diet. 2012; 112: 642-648
World Health Organization. What is moderate-intensity and vigorous-intensive physical activity? http://www.who.int/dietphysicalactivity/physical_activity_intensity/en/.
Centers for Disease Control and Prevention. Measuring physical activity intensity. http://www.cdc.gov/physicalactivity/basics/measuring/index.html.