Cuadra-Sánchez, César, Alexandra Rivero, Carlos Cabrera, Pedro Faneite, y Paulino Vigil-De Gracia. 2021. «Prevention of COVID-19 in Pregnant Women, Eventual Use of New Vaccines». Gaceta Médica De Caracas 129 (2):421-28. http://190.169.30.62/ojs/index.php/rev_gmc/article/view/22504.