1. Department of Cardiovascular Surgery; Centre Hospitalier Universitaire Vaudois; Lausanne Switzerland
2. Department of Cardiology; Centre Hospitalier Universitaire Vaudois; Lausanne Switzerland
3. Department of Anesthesiology; Centre Hospitalier Universitaire Vaudois; Lausanne Switzerland
4. Department of Intensive Care Medicine; Centre Hospitalier Universitaire Vaudois; Lausanne Switzerland