COVID-19(11) variant(8) coronavirus disease(7) Concentration(7) viral infection(7) severe COVID-19(6) risk(5) Therapies(4) Interferon beta-1b(4) Corticosteroids(4) high mortality(4) interferon(4) hydroxychloroquine/chloroquine(4) drug(4) QT prolongation(4) notable(4) CYP2D6(4) pharmacogenomics(4) Evidence(4) Efficacy(4) website(4) Hydroxychloroquine(4) SLCO1B1(4) Toxicity(4) genetic marker(4) inhibitors(4) clinical(4) SLCO1A2(4) genetic variants(4) implication(4)