- Correspondence to Dr Josser E Delgado Almandoz, Division of Interventional Neuroradiology, Neuroscience Institute, Abbott Northwestern Hospital, 800 E. 28th Street, Minneapolis, MN 55407, USA;
- Received October 26, 2012
- Revised December 11, 2012
- Accepted December 31, 2012
- First published January 12, 2013.
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