2 Department of Radiology and Biomedical Imaging, Section of Interventional Radiology, Yale School of Medicine, 330 Cedar Street, TE-2, New Haven, CT 06520.
3 Radiology Associates of Florida, Tampa, FL.
4 Department of Radiology and Biomedical Imaging, Section of Interventional Radiology, Yale School of Medicine, 330 Cedar Street, TE-2, New Haven, CT 06520. Electronic address: david.madoff@yale.edu.