Institution: | 1. Department of General Surgery, Complexo Hospitalario de Ourense, Ourense, Spain;2. Department of Preventive Medicine and Public Health, University of Granada, Granada, Spain;3. Unidad de Mastología de Grupo Oroño, Rosario, Argentina;4. Department of General Surgery, Hospital de Motril, Granada, Spain;5. CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain;6. Instituto de Investigación Biosanitaria IBS, Granada, Spain |