1. 1. IARC, Globocan 2020.
2. MD Anderson Manual of Medical Oncology, by HAGOP M. Kantarjian, Robert A. Wolff, Charles A. Koller.
3. Comprehensive Cancer Network, (NCCN Clinical Practice Guidelines in Oncology, Version 1.2011.
4. WHO/ICO HPV Information Centre Institut Català d'Oncologia Avda. Gran Via, s/n Km 2.7 08907 L'Hospitalet de Llobregat (Barcelona, Spain
5. AJCC, American Joint Committee on Cancer, FIGO, International Federation of Gynecologists and Oncologists.