1. Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea;
2. Department of Transdisciplinary Medicine and
3. Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul, Republic of Korea;
4. Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea;
5. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea;
6. Department of Medicine and
7. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea