1. First Affiliated Hospital of Anhui Medical University Hefei Anhui China
2. Second Affiliated Hospital of Dalian Medical University Dalian Liaoning China
3. General Hospital of Datong Coal Mining Group Datong Shanxi China
4. School of Pharmacy Dalian Medical University Dalian Liaoning China
5. Department of Critical Care and Pulmonary Medicine Shanxi Medical University Second Hospital Taiyuan Shanxi China