1. Division of Thoracic Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
2. Division of Pneumology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
3. Division of Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
4. Division of Anesthesiology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
5. Division of Intensive Care, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
6. Division of Pneumology, Hôpitaux Universitaires Genève, Geneva, Switzerland