[1] Univ Leuven, Dept Cardiovasc Med, Univ Hosp Gasthuisberg, Louvain, Belgium
[2] Amphia Ziekenhuis, Dept Cardiol, Breda, Netherlands
[3] Klinikum Oldenburg, Dept Cardiol, Oldenburg, Germany
[4] Heidelberg Univ, Dept Neurol, Heidelberg, Germany
[5] Uppsala Univ, Uppsala Clin Res Ctr, Uppsala, Sweden
[6] Uppsala Univ, Dept Med Sci, Uppsala, Sweden
[7] St Georges Univ, London, England
[8] Univ Birmingham, Ctr Cardiovasc Sci, Birmingham, W Midlands, England
[9] Univ Munster, Dept Cardiol & Angiol, Munster, Germany