1. Palermo Province Cancer Registry, Department of Science for the Promotion of Health “G.D. Alessandro,” University of Palermo, Italy.
2. Palermo Breast Cancer Registry and Experimental Oncology, Department of Oncology, ARNAS-Civico, Palermo, Italy.
3. Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy.
4. Department of Epidemiology of ASL6, Palermo, Italy.