1 Clinical Oncology Department, Virgen Macarena University Hospital, Seville, Spain.
2 Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, Seville, Spain.
3 GEICAM (Spanish Breast Cancer Research Group), Madrid, Spain.
5 Department of Preventive Medicine and Public Health, Faculty of Medicine, University of Seville, Seville, Spain.
6 Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, Seville, Spain. margalet@us.es.