COVID-19(37) Treatment(28) coronavirus disease(27) Chinese(21) Coronavirus disease 2019(21) Traditional Chinese medicine(17) disease(15) coronavirus(14) Patient(14) SARS-CoV-2(12) China(12) was used(12) were used(11) Randomized controlled trial(11) Evidence(10) systematic review(10) IMPROVE(10) therapy(10) acute respiratory syndrome(10) Traditional(9) control group(9) Shanghai(9) mechanism(9) addition(9) clinical(9) conducted(9) Cochrane Library(8) data extraction(8) Effect(8) traditional Chinese medicine.(8)