Rosário, Lina, António Bugalho, Lurdes Santos Matos, Luis Salazar de Sousa, António Sousa Guerreiro, Menezes da Silva, José Luís Nunes, João Caldeira, António Pinto Marques, and Dolores Otero. 2002. “Chronic Pleural Empyema – a Clinical Case-Report”. Internal Medicine 9 (3). Lisboa, Portugal. https://revista.spmi.pt/index.php/rpmi/article/view/1867.