1 Department of Otorhinolaryngology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.
2 Department of Emergency Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.
3 Department of Otorhinolaryngology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan; Department of Medicine, Tzu Chi University, Hualian, Taiwan.
4 Department of Otorhinolaryngology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan; Department of Medicine, Tzu Chi University, Hualian, Taiwan; Department of Medicine, Tzu Chi University, Hualian, Taiwan.