1. Department of Critical Care Medicine, the First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Emergency Medicine, Shandong Institute of Anesthesia and Respiratory Critical Medicine, Jinan, Shandong 250000, China
2. Department of Critical Care Medicine, Dongying Second People’s Hospital, Dongying, Shandong 257300, China
3. Department of Cardiology, Weihai Hospital of Traditional Chinese Medicine, Weihai, Shandong 264200, China