1. From the Departments of Radiology (G.S., X.B., M.V.), Pathology (P.L.F.), Radiation Oncology (B.F.), and Gynecology and Obstetrics (X.C.), Hospital Clínic de Barcelona and University of Barcelona Medical School, Villarroel 170, 08036 Barcelona, Spain; and Institut d’Investigacions August Pi i Sunyer, Barcelona, Spain (P.L.F.).