1. Nanlou Respiratory Department; Chinese PLA General Hospital, Chinese PLA Medical College; Beijing; China
2. Department of Aerospace Biodynamics, Faculty of Aerospace Medicine; Fourth Military Medical University; Xi'an; China
3. School of Instrumentation, Beijing University of Aeronautics and Astronautics; Beijing; China
4. Department of Tissue Engineering; Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences; Beijing; China