Department of Intensive Care Unit;
Nanjing First Hospital;
Nanjing Medical University;
Nanjing 210006;
Jiangsu Province;
China;
Department of Isolation Units;
Tongji Hospital;
Huazhong University of Science and Technology;
Wuhan 430030;
Hubei Province;
China;
Department of Intensive Care Unit;
Lishui People's Hospital;
Nanjing 211200;
Jiangsu Province;
China;
Gastrointestinal injury; Organ dysfunction; Septic shock; Critically ill; COVID-19;