Youssef, A. et al. 2020. The use of lung ultrasound during the COVID-19 pandemic: A narrative review with specific focus on its role in pregnancy. Journal of Population Therapeutics and Clinical Pharmacology. 27, SP1 (Oct. 2020), e64-e75. DOI:https://doi.org/10.15586/jptcp.v27iSP1.743.