_{1. More than 29 million Americans have diabetes; 1 in 4 doesn’t know. (2014, June 10).  https://archive.cdc.gov/www_cdc_gov/media/releases/2014/p0610-diabetes-report.html}  

_{2. Frequency of asymptomatic peripheral arterial disease in patients (2004., May). Retrieved from https://www.ncbi.nlm.nih.gov/pubmed/15224456}