1. Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524000, P.R. China
2. Department of Anesthesiology, The Eighth Affiliated Hospital of Sun Yat‑Sen University, Shenzhen, Guangdong 518033, P.R. China
3. Department of Internal Medicine, Shenzhen Institute of Research and Innovation, The University of Hong Kong, Shenzhen, Guangdong 518057, P.R. China