1. Organização Mundial de Saúde (2022, April 24). Cancer, Available online: https://www.who.int/health-topics/cancer#tab=tab_1.
2. Ministério da Saúde (2022, April 24). Relatório Anual Acesso a Cuidados de Saúde nos Estabelecimentos do SNS e Entidades Convencionadas 2018, Available online: https://www.sns.gov.pt/wp-content/uploads/2019/09/Relatorio_Acesso_2018-v.final_.pdf.
3. Direção Geral da Saúde (2017). Programa Nacional para as Doenças Oncológicas, Direção Geral da Saúde. Available online: http://hdl.handle.net/10400.26/22531.
4. Epidemiological and Demographic Characteristics of Patients with Head and Neck Tumours in the Northern Portugal: Impact on Survival;Santos;Acta Med. Port.,2016
5. Global, Regional, and National Cancer Incidence, Mortality, Years of Life Lost, Years Lived With Disability, and Disability Adjusted Life-years for 32 Cancer Groups, 1990 to 2015: A Systematic Analysis for the Global Burden of Disease Study;Fitzmaurice;JAMA Oncol.,2017