1. Department of Pulmonary and Critical Care MedicineAsan Medical Center, University of Ulsan College of Medicine Seoul South Korea
2. Department of OncologyAsan Medical Center, University of Ulsan College of Medicine Seoul South Korea
3. Department of Thoracic and Cardiovascular SurgeryAsan Medical Center, University of Ulsan College of Medicine Seoul South Korea
4. Department of Radiation OncologyAsan Medical Center, University of Ulsan College of Medicine Seoul South Korea
5. Department of PathologyAsan Medical Center, University of Ulsan College of Medicine Seoul South Korea