COVID-19(37) Result(30) Patient(30) surgical(19) COVID-19 pandemic(19) pandemic(15) hospital(14) reported(14) surgery(14) Care(13) Treatment(11) patients(11) performed(10) age(10) Hospitalization(10) Volume(10) Analysis(9) Operating room(9) retrospective(9) affected(9) Effect(9) Pandemics(9) effective(8) conducted(8) Characteristics(8) SARS-CoV-2(8) was performed(7) recommendation(7) risk(7) Coronavirus disease 2019(7)