Silveira, D;    Prieto-Garcia, JM;    Boylan, F;    Estrada, O;    Fonseca-Bazzo, YM;    Jamal, CM;    Magalhaes, PO;             ... Heinrich, M; + view all <#>        Silveira, D;  Prieto-Garcia, JM;  Boylan, F;  Estrada, O;  Fonseca-Bazzo, YM;  Jamal, CM;  Magalhaes, PO;  Pereira, EO;  Tomczyk, M;  Heinrich, M;   - view fewer <#>    (2020)    COVID-19: Is There Evidence for the Use of Herbal Medicines as Adjuvant Symptomatic Therapy?                   Frontiers in Pharmacology , 11     , Article 581840.  10.3389/fphar.2020.581840 <https://doi.org/10.3389/fphar.2020.581840>.       Green open access