Varicella-zoster virus.(9) ulcerative colitis(6) aciclovir(6) Treatment(4) COVID-19(4) Pancreatitis(3) protocol(3) diarrhea(3) bleeding(3) vomiting(3) resulting(3) coronavirus(3) Colitis(3) Lung injury(3) extracorporeal membrane oxygenation(3) Inflammatory(3) intestinal(3) severe COVID-19(3) airway(3) ECMO(3) professional(3) indicate(3) polymerase chain reaction(3) pandemic(3) outcome(3) Patient(3) Hepatitis B virus(3) COVID-19 patient(3) Inflammatory fibroid polyp(3) hepatitis E virus(3)