From the *Department of Bioengineering, University of Louisville, Louisville, Kentucky; and †Department of Thoracic and Cardiovascular Surgery, Cardiovascular Innovation Institute, University of Louisville, Louisville, Kentucky.
Submitted for consideration January 2014; accepted for publication in revised form January 2014.
Disclosure: The authors have no conflicts of interest to report.
Reprint Requests: Steven C. Koenig, PhD, Departments of Bioengineering and Cardiothoracic Surgery, University of Louisville, Cardiovascular Innovation Institute, 302 East Muhammad Ali Boulevard, Room 408, Louisville, KY 40202. Email: email@example.com.