- Correspondence to Dr Josser E Delgado Almandoz, Division of Neurointerventional Radiology, Neuroscience Institute, Abbott Northwestern Hospital, 800 E. 28th Street, Minneapolis, MN 55407, USA;
- Received October 15, 2015
- Revised November 8, 2015
- Accepted November 16, 2015
- First published December 14, 2015.
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