1 Department of Anatomy and Cell Biology, Chung-Ang University College of Medicine, Seoul, Republic of Korea.
2 Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, Chung-Ang University, Seoul, Republic of Korea.
3 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea.
4 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea. wykim81@cau.ac.kr.
5 Biomedical Research Institute, Chung-Ang University Hospital, Seoul, Republic of Korea. wykim81@cau.ac.kr.