Donati, Serena, et al. “The First SARS-CoV-2 Wave Among Pregnant Women in Italy: Results from a Prospective Population-Based Study”. Annali dell’Istituto Superiore Di Sanità, vol. 57, no. 4, Dec. 2021, pp. 272-85, https://annali.iss.it/index.php/anna/article/view/1411.