Silva, I S, C Nunes, G Mimoso, E Castela, and J Mesquita. 1997. “ The Drug of Choice for the in-Utero Treatment of Paroxysmal Supraventricular Tachycardia”. Acta Médica Portuguesa 10 (1). Lisbon, Portugal:95-98. https://doi.org/10.20344/amp.2373.