Paul University Hospital. His clinical interests include pulmonary hypertension, lung transplantation, lung volume reduction surgery for emphysema, viral infections in immunosuppressed patients, and clinical outcomes research in lung transplantation and pulmonary hypertension. Since joining UT Southwestern in 2000, Dr. Torres developed the Pulmonary Hypertension Program, now the largest such program in the United States. In 2009 he assumed directorship of UT Southwestern's Lung Transplant Program, which is the eighth largest in the country.