[1] McMaster Univ, Dept Med, Hamilton, ON, Canada
[2] Univ Arizona, Div Cardiovasc Med, Tucson, AZ USA
[3] Duke Univ, Med Ctr, Div Cardiol, Durham, NC 27710 USA
[4] Keele Univ, Cardiovasc Res Grp, Stoke On Trent, Staffs, England
[5] Univ Lorraine, Ctr Invest Clin, Nancy, France