1. Gynecology Department Hospital Universitari de Bellvitge IDIBELL Universitat de Barcelona Barcelona Spain
2. Cancer Epidemiology Research Program Catalan Institute of Oncology (ICO) IDIBELL L'Hospitalet de Llobregat Barcelona Spain
3. Centro de Investigación Biomédica en Red de Cáncer (CIBERONC) Madrid Spain
4. Obstetrics and Gynecology Department Hospital General de L’Hospitalet, Consorci Sanitari Integral L’Hospitalet de Llobregat Barcelona Spain
5. CIBER Epidemiologíay Salud Pública (CIBERESP)Madrid Spain