[1] Marche Polytech Univ, Sch Med, Osped Uniti, Sect Pathol Anat, Ancona, Italy
[2] St Orsola Marcello Malpighi Hosp, Div Cardiol, Bologna, Italy
[3] Univ Hosp Careggi, Sect Histopathol & Mol Diagnost, Florence, Italy
[4] Univ Cordoba, Sch Med, Dept Surg, Cordoba, Spain
[5] Indiana Univ Sch Med, Dept Pathol & Lab Med, Indianapolis, IN 46202 USA