1 Department of Internal Medicine, Kaohsiung Veterans General Hospital, Tainan Branch, Tainan, Taiwan.
2 Department of Intensive Care Medicine, Chi Mei Medical Center, Tainan, Taiwan.
3 Department of Internal Medicine, Chi Mei Medical Center, Chiali, Tainan, Taiwan.
4 Department of Intensive Care Medicine, Chi Mei Medical Center, Liouying, Tainan, Taiwan.
5 Department of Intensive Care Medicine, Chi Mei Medical Center, Tainan, Taiwan; Department of Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. Electronic address: yu2231@gmail.com.