1. Consultant Cardiologist Department of Cardiology, John Radcliffe Hospital, Oxford, OX3 9DU, UK
2. Senior consultant cardiac surgeon Luzern Kantonsspital - Herzzentrum Spitalstrasse, 6000 Luzern 16, Switzerland. Military Deputy Head Aviation Medicine Swiss Air Force Aeromedical Centre, Dübendorf, Switzerland
3. Consultant Cardiologist Oxford Heart Centre John Radcliffe Hospital Oxford, UK