- Correspondence to Dr Michel D Crema, Department of Radiology, Quantitative Imaging Center, Boston University School of Medicine, 820 Harrison Avenue, FGH Building, 3rd Floor, Boston, MA 02118, USA;
- Received December 7, 2012
- Revised May 14, 2013
- Accepted June 29, 2013
- First published July 19, 2013.
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