1 Department of Biomedicine, Neurosciences and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Clinical Laboratory Medicine, University Hospital "P. Giaccone", Palermo, Italy.
2 Department of Health Promotion, Maternal and Infant Care, Internal Medicine, and Medical Specialties, "G. D'Alessandro", University of Palermo, Palermo, Italy.
3 Department of Laboratory Medicine, University Hospital "P. Giaccone", Palermo, Italy.
4 Department of Preventive Medicine and Laboratory Services, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Unit of Clinical Chemistry, Milan, Italy.
5 Department of Surgical, Oncological and Oral Sciences, Unit of Urology, University Hospital "P. Giaccone", Palermo, Italy.