Cerejeira, Diogo, and Frederico Bonito. “Venous and Arteriovenous Malformations of the Lip: A Problematic Differential Diagnosis”. Journal of the Portuguese Society of Dermatology and Venereology 78, no. 3 (September 27, 2020): 277-280. Accessed April 25, 2024. https://revista.spdv.com.pt/index.php/spdv/article/view/1218.