COVID-19(18) Patient(13) coronavirus disease(13) Coronavirus disease 2019(12) risk(12) coronavirus(10) acute respiratory syndrome(10) SARS-CoV-2(10) increased risk(8) severe acute respiratory syndrome Coronavirus(8) severe acute respiratory syndrome coronavirus 2(8) acute respiratory syndrome coronavirus(8) patients(8) Critically ill(7) median(7) parenteral nutrition(7) no difference(7) cross-sectional(7) 95% CI(7) syndrome(6) Critically ill patient(6) Ill(6) Hospital stay(6) less(6) Admission(6) nutrition(6) Infection(6) Mortality(6) SARS-CoV-2 antibodies(5) Course(5)