- Correspondence to Dr Christin Clajus, Department of Diagnostic and Interventional Radiology and Neuroradiology, Helios General Hospital Erfurt, Nordhäuser Str. 74, Erfurt 99089, Germany;
- Received January 13, 2016
- Revised March 15, 2016
- Accepted March 25, 2016
- First published April 13, 2016.
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