1. Department of Radiology, Northeastern Ohio Medical University, Rootstown, OH
2. Southwoods Imaging, 7623 Market St, Youngstown, OH 44512
3. Clinical Epidemiology and Biometeric Unit, Fondazione IRCCS Policlinico, San Matteo Pavia, Italy
4. Department of Gynecology and Obstetrics, University Breast Unit, Heidelberg, Germany