1. Laser Medical Center, The First People’s Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology), Kunming, China.
2. Medical school, Kunming University of Science and Technology, Kunming, China.
3. Department of Anesthesiology, The People’s Hospital of Wenshan Zhuang and Miao Minority Autonomous Prefecture, Wenshan, China.
4. Department of Geriatric, The First People’s Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology), Kunming, China.
5. Department of Anesthesiology, The First People’s Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology), Kunming, China.