1. Department of Internal Medicine, Ulsan University Hospital, School of Medicine, University of Ulsan, Ulsan 44033, Korea.
2. Department of Thoracic Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea.
3. Department of Anesthesiology and Pain Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea.
4. School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea.
5. Biomedical Research Center, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea.
6. Department of Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan 44033, Korea.