The World Health Organization (WHO) has declared that Coronavirus disease 2019 (Covid-19) is a public health emergency of international concern as it continues to spread worldwide.1 After a median incubation period of 4 days, fever and cough are the two most common manifestations of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection.
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Amatore et al. (2020) studied this question.
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