1 Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China.
2 Division of Chest Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China.
3 Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China; Division of Anesthesiology, Department of Surgery, Gangshan Branch, Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan, Republic of China.
4 Medical student of Taipei Medical University, Taipei, Taiwan, Republic of China.
5 Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China. Electronic address: aneswu@gmail.com.