MŁODOŻENIEC, A.; SZUL, P.; GALA-BŁĄDZIŃSKA, A. Gastrointestinal symptoms as antecedent signs of severe acute respiratory syndrome coronavirus 2 infection. European Journal of Clinical and Experimental Medicine, [S. l.], v. 18, n. 4, p. 323–325, 2020. DOI: 10.15584/ejcem.2020.4.9. Disponível em: https://journals.ur.edu.pl/ejcem/article/view/11859. Acesso em: 18 jan. 2026.