1.
Mesquita A, Kucheruk E, Lobão M, Caiado P. Palla’s Sign: A Case of Acute Pulmonary Embolism. SPMI CR [Internet]. 2023 Jun. 5 [cited 2024 Dec. 21];1(2):98-9. Available from: https://casereports.spmi.pt/index.php/cr/article/view/55