1. Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
2. Division of Pulmonary and Critical Care Medicine and
3. Division of Pulmonology
4. Division of Cardiology, University of California, Davis, Davis, California
5. Department of Pathology, Johns Hopkins, Baltimore, Maryland
6. Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria; and
7. Division of Cardiology, and
8. Institute for Cardiac Diagnostic and Therapy, Berlin, Germany
9. Otto Loewi Center, Physiology, Medical University of Graz, Graz, Austria