1. Department of Pulmonary Medicine, VU University Medical Center, Amsterdam, The Netherlands
2. Department of Thoracic and Cardiovascular Surgery, Pontchaillou Hospital, University of Rennes 1, Rennes, France
3. Laboratory of Surgical Research, Marie Lannelongue Hospital, University of Paris Sud, Le Plessis Robinson, France
4. Division of Cardiovascular Medicine, Stanford University, Palo Alto, California