1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Taitung MacKay Memorial Hospital, MacKay Memorial Hospital, Taiwan; MacKay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan.
2 Department of Emergency Medicine, Tamsui MacKay Memorial Hospital, MacKay Memorial Hospital, Taiwan.
3 Department of Radiology, Taitung MacKay Memorial Hospital, Taiwan.
4 Department of Life Science, Fu Jen Catholic University, New Taipei City, Taiwan. Electronic address: 141655@mail.fju.edu.tw.