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TITLE: COVID-19 symptoms: a case-control study, Portugal, March-April 2020
AUTHORS: Duque, MP; Lucaccioni, H; Costa, C; Marques, R; Antunes, D; Hansen, L; Machado, RS;
PUBLISHED: 2021, SOURCE: EPIDEMIOLOGY AND INFECTION, VOLUME: 149
INDEXED IN: Scopus WOS