RACZKIEWICZ, Przemysław; ŚMIECH, Natalia; KORZEC, Tomasz; KANIA, Konrad; KACZERSKA, Marlena. COVID-19 and threats to pregnancy and the fetus. Journal of Education, Health and Sport, [S. l.], v. 11, n. 4, p. 11–17, 2021. DOI: 10.12775/JEHS.2021.11.04.001. Disponível em: https://apcz.umk.pl/JEHS/article/view/JEHS.2021.11.04.001. Acesso em: 7 mar. 2026.