1 British Heart Foundation Clinical Research Training Fellow and Specialist Registrar in Cardiology, Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT.
2 British Heart Foundation Clinical Research Training Fellow and Specialist Registrar in Nephrology Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT.
3 Consultant Cardiologist and Professor of Cardiology, Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT.
4 Consultant Nephrologist and Professor of Nephrology, Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT.