1. Division of Pulmonology, Department of Internal Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Korea.
2. Division of Infectious Diseases, Department of Internal Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Korea.
3. Department of Radiology, Dongsan Hospital, Keimyung University College of Medicine, Daegu, Korea.