1. Reprints: Enrico Dessy, MD, Second Department of Pathology, School of Medicine, University of Milano, San Paolo Hospital, Via di Rudinì, 8-20142 Milan, Italy (anapat2@imiucca.csi.unimi.it).
2. From the Department of Toxicology, Section of Molecular Pathology, School of Medicine, University of Cagliari and Center of Oncologic Research, University of Milan, Milan, Italy (Dr Dessy); the Second Department of Pathology (Drs Falleni, Braidotti, and Del Curto) and the Department of Thoracic and General Surgery (Dr Panigalli), School of Medicine, University of Milan, Milan, Italy; and the Depa