School of Nursing;
Hunan Traditional Chinese Medical College;
Zhuzhou;
China;
Department of Gastroenterology;
Chongqing University Cancer Hospital;
Chongqing;
China;
Department of Nursing;
Universitat Rovira i Virgili;
Tarragona;
Spain;
Critical ill; Mechanical ventilation; Spontaneous breathing trial; Network meta-analysis;