1. Department of Respiratory Medicine
2. Laboratory of Cardiovascular Diseases, Research Center of Regeneration Medicine, and
3. Intensive Care Unit, West China Hospital, Sichuan University, Chengdu, China
4. First Affiliated Hospital of Kunming Medical University, Kunming, China
5. Fourth People’s Hospital of Sichuan Province, Chengdu, China
6. Department of Respiratory Medicine, Fourth Military Medical University, Xian, China