risk(6) COVID-19(6) natural language processing(4) complementary(4) approach(4) category(4) diagnostic(4) Early detection(4) Analysis(4) Volume(4) eight(4) PPV(4) Stratification(4) Predictive value(4) pathway(4) natural language(4) identify(4) eligible(4) Algorithm(4) strain(4) report(4) applied(4) pandemic(4) Positive predictive value(4) error(4) taxonomy(4) evaluated(4) explicit(4) complement(4) Care(2)