1 Section Head, Internal Medicine and Cardiology, Air Force Centre of Aerospace Medicine, Fuerstenfeldbruck, Germany.
2 Consultant Cardiologist and Electrophysiologist, Central Military Hospital, Koblenz, Germany.
3 Consultant Cardiologist and Electrophysiologist, Cardiac Department, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
4 Consultant Cardiologist, Department of Cardiology, Royal Brompton Hospital, London, UK.