1. Department of Intensive Care Unit, The First Affiliated Hospital of Jinan University, Guangzhou 510000, Guangdong, China
2. Department of Intensive Care Unit, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, Guangdong, China
3. Department of Intensive Care Unit, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, Guangdong, China
4. Guangzhou Women and Children’s Medical Center, Guangzhou 510623, Guangdong, China
5. Division of Emergency Critical Care Medicine, Department of Emergency Medicine, Brigham and Women’s Hospital, Boston, MA, USA
6. Harvard Medical School, Boston, MA, USA