1 Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, Ancona, Italy. Electronic address: r.montironi@univpm.it.
2 Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
3 Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, Ancona, Italy.
4 Department of Surgery, Cordoba University Medical School, Cordoba, Spain.