1. Division of Pulmonology, Department of Internal Medicine, The Armed Forces Goyang Hospital, Goyang, Republic of Korea
2. Department of Laboratory Medicine, Industry-Academic Cooperation Foundation of Kosin University, Busan, Republic of Korea
3. Department of Occupational and Environmental Medicine, Cheongju Medical Center, Cheongju, Republic of Korea
4. Department of Radiology, Haenam Woori General Hospital, Haenam, Republic of Korea
5. Department of Radiology, Busan Himchan Hospital, Busan, Republic of Korea
6. Department of Anesthesiology and Pain Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
7. Department of Family Medicine, Kosin University College of Medicine, Busan, Republic of Korea