1. Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
2. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
3. Research Center for Reproductive Medicine, Gynecological Endocrinology and Menopause, IRCCS San Matteo Foundation, Pavia, Italy
4. Escuela de Posgrados en Salud, Universidad Espíritu Santo, Samborondón, Ecuador