1. Department of Anesthesiology, Hebei General Hospital, Shijiazhuang, China
2. Department of Clinical Laboratory, Hebei General Hospital, Shijiazhuang, China
3. Department of Anesthesiology and Pain Medicine, Juntendo University School of Medicine, Tokyo, Japan
4. Department of Outcomes Research, Cleveland Clinic, Cleveland, OH, USA
5. Department of Medicine, Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA