Ferreira, Patrícia Sá, Patrícia Rodrigues, Ana Peres, Paulo Roque Do Vale, Ana Casimiro, and Florbela Cunha. 2011. “Infective Endarteritis Complicating Clinically Silent Patent Ductus Arteriosus”. Acta Médica Portuguesa 24 (December). Lisbon, Portugal:605-10. https://doi.org/10.20344/amp.1557.