1. Sections of Vascular Surgery, Departments of Surgery and Medicine, University of Colorado Health Sciences Center, Denver, CO, USA,
2. Feinberg School of Medicine at Northwestern University, Chicago, IL, USA
3. School of Nursing, University of Minnesota, Minneapolis, MN, USA
4. Department of Vascular Surgery, The Queen Elizabeth Hospital, Adelaide, South Australia
5. Section of Medicine, Department of Surgery and Medicine, University of Colorado Health Sciences Center, Denver, CO, USA