[1] Ruhr Univ Bochum, Clin Electrophysiol Herz & Diabet Zentrum NRW, Bad Oeynhausen, Germany
[2] Univ Med Ctr Hamburg Eppendorf, Univ Heart & Vasc Ctr Hamburg, Dept Cardiol, Hamburg, Germany
[3] German Ctr Cardiovasc Res DZHK, Partner Site Hamburg Kiel Lubeck, Hamburg, Germany
[4] Univ Birmingham, Inst Cardiovasc Sci, Birmingham, England