1. Section of Pharmacology, Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy
2. Section of Physiology and Human Nutrition, Department of Biochemical, Physiological and Nutritional Sciences, University of Messina, Messina, Italy
3. Department of Urology, University of Messina, Messina, Italy
4. Department of Urology, Polyclinic Hospital, University of Catania, Catania, Italy