1. Sioux Falls Family Medicine Residency Program, Center for Family Medicine, 1115 East 20th Street, Sioux Falls, SD 57105, USA
2. Department of Surgery, University of South Dakota Sanford School of Medicine, 1400 W. 22nd Street, Sioux Falls, SD 57105, USA
3. Sanford Vascular Associates, , 1305 W 18th Street, Sioux Falls, SD 57105, USA
4. Department of Family Medicine, University of South Dakota Sanford School of Medicine, 1400 W. 22nd Street, Sioux Falls, SD 57105, USA