[1] Univ Freiburg, Dept Cardiovasc Surg, Heart Ctr Freiburg, Fac Med, Freiburg, Germany
[2] Stanford Univ, Dept Cardiothorac Surg, Sch Med, Stanford, CA USA
[3] Stanford Univ, Dept Cardiol, Sch Med, Stanford, CA USA
[4] Natl Hosp Norway, Oslo Univ Hosp, Dept Cardiothorac Surg, Oslo, Norway
[5] Univ Texas Austin, Aerosp Engn & Engn Mech, Austin, TX 78712 USA
[6] Spectrum Hlth, Div Cardiothorac Surg, Grand Rapids, MI USA
[7] Providence St Vincent Hosp, Providence Heart & Vasc Inst, Portland, OR USA
[8] Univ Appl Sci, Dept Math & Appl Stat, Jena, Germany
[9] Stanford Univ, Sch Engn, Dept Mech Engn, Stanford, CA USA
[10] Palo Alto Med Fdn, Res Inst, Lab Cardiovasc Physiol & Biophys, Palo Alto, CA 94301 USA