LAMEIRAS, Catarina; FIALHO, Inês; LOPES, Marta Mendes  e  DORIA, Maria do Céu. Papillary Fibroelastoma on the Pulmonary Valve: An Uncommon and Unexpected Diagnosis. Medicina Interna [online]. 2022, vol.29, n.4, pp.35-36.  Epub 02-Jan-2023. ISSN 0872-671X.