Department of Internal Medicine No.1 Affiliated Nanchong Chinese Medicine Hospital of North Sichuan Medical College Nanchong 637000 China;
Department of Critical Care Medicine Affiliated Nanchong Chinese Medicine Hospital of North Sichuan Medical College Nanchong 637000 China;
Department of Internal Medicine No.1 Affiliated Nanchong Chinese Medicine Hospital of North Sichuan Medical College Nanchong 637000 China;
Department of Internal Medicine No.1 Affiliated Nanchong Chinese Medicine Hospital of North Sichuan Medical College Nanchong 637000 China;
Department of Internal Medicine No.1 Affiliated Nanchong Chinese Medicine Hospital of North Sichuan Medical College Nanchong 637000 China;
Purgation and catharsis method; Severe pneumonia; Meta-analysis;