Jungmi Yun, RN, PhD 1, Yerin Baek, RN 2, Rayu Yun, MD 3, Woo Hyun Cho, MD, PhD 4, 5, Taehwa Kim, MD, PhD 4, 5, ⁎ 
1 College of Nursing, Research Institute of Nursing Science, Pusan National University, 49, Busandaehak-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
2 Graduate Student, College of Nursing, Pusan National University, 49, Busandaehak-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
3 Department of Rehabilitation Medicine, Rehabilitation Hospital, Pusan National University Yangsan Hospital, 20, Geumo-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
4 Division of Pulmonology, Allergy and Critical Care Medicine, Department of Internal Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University Hospital 20, Geumo-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea
5 Department of internal medicine, School of Medicine, Pusan National University, 49, Busandaehak-ro, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, 50612, Republic of Korea