1 Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
2 Institute of Technical Medicine, Furtwangen University, Villingen-Schwenningen, Germany.
3 Division of Chest Medicine, Far Eastern Memorial Hospital, Taipei, Taiwan.
4 Department of Critical Care Medicine, Far Eastern Memorial Hospital, No. 21, Sec. 2, Nanya S. Rd., Banciao Dist., New Taipei City, 220, Taiwan. houtai38@gmail.com.
5 Department of Anesthesiology and Intensive Care Medicine, University Medical Center of Schleswig-Holstein, Campus Kiel, Kiel, Germany.