1. Department of Cardiology, University Heart Center Hamburg, Hamburg/Germany (A.R., L.R., M. Nodorp, J.W., P.M., L.D., R.S., M.D.L., M. Nies, T.R., S.B., P.K., C.M., B.R., A.M.).
2. Genesisare, Melbourne, Australia (T.L.).
3. Institute of Cardiovascular Sciences, University of Birmingham, United Kingdom (P.K.).