Magalhães, Susana, Sónia Pereira, Isabel Bessa, Fátima Guedes, and Amélia Pereira. 2009. “Malt Lymphoma Associated With Sjögren Syndrome: Clinical Report”. Internal Medicine 16 (4). Lisboa, Portugal:224-29. https://revista.spmi.pt/index.php/rpmi/article/view/1429.