1. Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
2. 2nd Department of Radiology, University General Hospital “ATTIKON,” Medical School, National and Kapodistrian University of Athens, Athens, Greece
3. Department of Radiology, Interventional Oncology - Stereotaxy and Robotics, Medical University Innsbruck, Innsbruck, Austria
4. Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
5. Interventional Radiology and Center for Interventional Oncology, NIH Clinical Center and National Cancer Institute, National Institutes of Health, Bethesda, Maryland