Ferreira, P.S., Rodrigues, P., Peres, A., Roque Do Vale, P., Casimiro, A. and Cunha, F. 2011. Infective endarteritis complicating clinically silent patent ductus arteriosus. Acta Médica Portuguesa. 24, (Dec. 2011), 605–10. DOI:https://doi.org/10.20344/amp.1557.