[1] Johns Hopkins Univ, Elect & Comp Engn Dept, 3400 North Charles St,RM Clark 201B, Baltimore, MD 21218 USA
[2] Univ Utah, Bioengn Dept, 36 S Wasatch Dr,SMBB RM 3100, Salt Lake City, UT 84112 USA
[3] Univ Utah, Surg Dept, 30 N 1900 E,RM 3B205, Salt Lake City, UT 84112 USA
[4] Univ Utah, Cardiothorac Div, Surg Dept, 2000 Circle Hope,RM LL376, Salt Lake City, UT 84112 USA
[5] Univ Utah, Bioengn Dept, 36 S Wasatch Dr,SMBB RM 1242, Salt Lake City, UT 84112 USA
[6] Univ Utah, Cardiothorac Div, Surg Dept, 30 N 1900 E,RM 3B205, Salt Lake City, UT 84112 USA