About the Authors

Adela Castelló

Affiliations Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain, Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain, Cancer Epidemiology Research Group, IIS Puerta de Hierro (IDIPHIM), Majadahonda, Madrid, Spain

Miguel Martín

Affiliations Medical Oncology Unit, Hospital Clínico Universitario San Carlos, Madrid, Spain, Medical Oncology Unit, Instituto De Investigación Sanitaria Gregorio Marañón/ Universidad Complutense, Madrid, Spain

Amparo Ruiz

Affiliation Medical Oncology Unit, Instituto Valenciano de Oncología, Valencia, Spain

Ana M. Casas

Affiliation Medical Oncology Unit, Hospital Virgen del Rocío, Sevilla, Spain

Jose M Baena-Cañada

Affiliation Medical Oncology Unit, Hospital Puerta del Mar, Cádiz, Spain

Virginia Lope

Affiliations Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain, Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain, Cancer Epidemiology Research Group, IIS Puerta de Hierro (IDIPHIM), Majadahonda, Madrid, Spain

Silvia Antolín

Affiliation Medical Oncology Unit, Complejo Hospitalario Universitario A Coruña, A Coruña, Spain

Pedro Sánchez

Affiliation Medical Oncology Unit, Complejo Hospitalario de Jaén, Jaén, Spain

Manuel Ramos

Affiliation Medical Oncology Unit, Centro Oncológico de Galicia, A Coruña, Spain

Antonio Antón

Affiliation Medical Oncology Unit, Hospital Universitario Miguel Servet, Zaragoza, Spain

Montserrat Muñoz

Affiliation Medical Oncology Unit, Hospital Clinic I Provincial, Barcelona, Spain

Begoña Bermejo

Affiliation Medical Oncology Unit, Hospital Clínico, Valencia, Spain

Ana De Juan-Ferré

Affiliation Medical Oncology Unit, Hospital Marqués de Valdecilla, Santander, Spain

Carlos Jara

Affiliation Medical Oncology Unit, Fundación Hospitalaria de Alcorcón, Alcorcón, Spain

José I Chacón

Affiliation Medical Oncology Unit, Hospital Virgen de la Salud, Toledo, Spain

María A. Jimeno

Affiliation Start-up Unit, Spanish Breast Cancer Research Group (GEICAM) Headquarters, San Sebastián De Los Reyes, Madrid, Spain

Petra Rosado

Affiliation Medical Oncology Unit, Instituto De Investigación Sanitaria Gregorio Marañón/ Universidad Complutense, Madrid, Spain

Elena Díaz

Affiliation Medical Oncology Unit, Hospital Virgen del Rocío, Sevilla, Spain

Vicente Guillem

Affiliation Medical Oncology Unit, Instituto Valenciano de Oncología, Valencia, Spain

Ana Lluch

Affiliation Medical Oncology Unit, Hospital Clínico, Valencia, Spain

Eva Carrasco

Affiliation Medical Oncology Unit, Hospital Marqués de Valdecilla, Santander, Spain

Beatriz Pérez-Gómez

Affiliations Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain, Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain, Cancer Epidemiology Research Group, IIS Puerta de Hierro (IDIPHIM), Majadahonda, Madrid, Spain

Jesús Vioque

Affiliations Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain, Epidemiology Department, Universidad Miguel Hernandez, Sant Joan d'Alacant, Spain

Marina Pollán

mpollan@isciii.es

Affiliations Cancer Epidemiology Unit, National Center for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain, Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain, Cancer Epidemiology Research Group, IIS Puerta de Hierro (IDIPHIM), Majadahonda, Madrid, Spain

EpiGEICAM researchers

Membership of the EpiGEICAM study is provided in the Acknowledgments.

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: M. Martín AR AMC JMBC SA PS MR AA M. Muñoz ALL BB AJF CJ JIC MAJ PR ED VG EC BPG JV MP. Performed the experiments: M. Martín AR AMC JMBC SA PS MR AA M. Muñoz ALL BB AJF CJ JIC MAJ PR ED VG EC BPG JV MP. Analyzed the data: AC VL JV MP. Wrote the paper: AC MP.