[1] Brighton & Sussex Med Sch, Brighton, E Sussex, England
[2] CERC, Massy, France
[3] Royal Sussex Cty Hosp, Brighton, E Sussex, England
[4] Brighton & Sussex Univ Hosp, Overijse, England
[5] Piedmont Heart Inst, Atlanta, GA USA
[6] Columbia Univ, New York, NY USA
[7] Piedmont Heart Inst CardioThorac Surg, Atlanta, GA USA
[8] Imperial Coll, London, England
[9] Erasmus Univ, Med Ctr, Dept Cardiothorac Surg, Rotterdam, Netherlands
[10] Cleveland Clin Fdn, Dept Thorac & Cardiovasc Surg, Cleveland, OH 44195 USA
[11] Columbia Univ, Med Ctr, NewYork Presbyterian Hosp, Cardiovasc Res Fdn, New York, NY USA