1. Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, Massachusetts, USA
2. Interdisciplinary Program in Bioengineering, School of Chemical and Biological Engineering, Institute of Chemical Processes, BioMAX Institute, Seoul National University, Seoul, South Korea
3. Department of Thoracic and Cardiovascular Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea