COVID-19(15) enteral nutrition(9) coronavirus disease(9) Coronavirus disease 2019(9) Patient(9) with COVID-19(7) SARS-CoV-2(7) Critically ill(6) observational study(6) collected(6) Critical(6) Nutrition therapy(5) patients(5) Inflammation(5) Length of stay(5) intensive care unit(5) COVID-19 patients(5) mechanical ventilation(5) Critical illness(5) significant difference(4) outcome(4) patients with COVID-19(4) nutrition support(4) nutrition(4) retrospective(4) Enteral(4) COVID‐19(4) Mortality(4) parenteral nutrition(4) indicated(3)