1. University of Pennsylvania Perelman School of Medicine, 14640, Radiology, Philadelphia, Pennsylvania, United States;
2. Seoul National University, 26725, Radiology, Gwanak-gu, Seoul, Korea (the Republic of)
3. University of Pennsylvania Perelman School of Medicine, 14640, Thoracic Surgery, Philadelphia, Pennsylvania, United States
4. University of Pennsylvania Perelman School of Medicine, 14640, Pulmonary, Allergy, and Critical Care, Philadelphia, Pennsylvania, United States
5. University of Pennsylvania Perelman School of Medicine, 14640, Pulmonary, Allergy and Critical Care, Philadelphia, Pennsylvania, United States
6. University of Pennsylvania Perelman School of Medicine, 14640, Radiology, Philadelphia, Pennsylvania, United States