1. Institute of Infectious Diseases and Public Health, Polytechnic University of the Marche Region, A.O. Ospedali Riuniti, Ancona, Italy
2. Department of General Surgery, I.N.R.C.A.-I.R.R.C.S., Polytechnic University of the Marche Region, Ancona, Italy
3. Institute of Maternal and Children's Sciences—Urology, Polytechnic University of the Marche Region, A.O. Ospedali Riuniti, Ancona, Italy
4. Experimental Animal Models for Aging Units, Research Department, I.N.R.C.A.-I.R.R.C.S., Ancona, Italy
5. Tufts University, Cummings School of Veterinary Medicine, Department of Biomedical Sciences, North Grafton, Massachusetts 01536