Liang Cheng, MDDepartment of Pathology and Laboratory MedicineBrown University Warren Alpert Medical SchoolProvidence, RIUSAGeorge J. Netto, MDDepartment of PathologyThe University of Alabama at Birmingham (UAB) Heersink School of MedicineBirmingham, ALUSAJohn N. Eble, MD Department of Pathology and Laboratory MedicineIndiana University School of MedicineVan Nuys Medical Science BuildingIndianapolis, IN USA