COVID-19(9) COVID-19 pandemic(8) age(7) Infection(7) SARS-CoV-2(7) outcome(7) epidemiological data(4) supported(4) distribution(4) cure(4) TMPRSS2(4) Serine(4) genetic background(4) Comorbidities(4) Affect(4) TMPRSS2.(4) carried(4) text mining(4) Patient(4) list of gene(4) cross-sectional(4) MBL2(4) patients(4) Host genetic factor(4) Innate immunity(4) Health(4) list(4) serine 2(4) protease(4) consequence(4)