1. Division of Pulmonary & Critical Care; Department of Medicine; Washington University in St. Louis School of Medicine; St. Louis MO
2. Department of Surgery; Section of Vascular Surgery; Washington University in St. Louis School of Medicine; St. Louis MO
3. Division of Cardiothoracic Surgery; Department of Surgery; Washington University in St. Louis School of Medicine; St. Louis MO
4. Section of Pulmonary and Critical Care Medicine; Temple University School of Medicine; Philadelphia PA
5. Section of Cardiothoracic Surgery; Temple University School of Medicine; Philadelphia PA