A. I. Silva, D. Fonseca, J. Castro, J. Lusquinhos, e C. Sampaio, «Parturients with COVID-19 undergoing anaesthesia or analgesia for labor, delivery or cesarean section: a retrospective observational study», Rev Soc Port Anestesiol, vol. 29, n. 4, pp. 192–198, Jan. 2021.