LIU, Antonio. Two Weeks of “COVID-19” Search on PubMed.gov. Acta Biomedica Atenei Parmensis, Fidenza, Italy, v. 91, n. 4, p. e2020199, 2020. DOI: 10.23750/abm.v91i4.11016. Disponível em: https://mail.mattioli1885journals.com/index.php/actabiomedica/article/view/11016. Acesso em: 19 may. 2025.