- Correspondence to Dr Michel Piotin, Department of Interventional Neuroradiology, Hôpital de la Fondation Ophtalmologique Adolphe de Rothschild, Paris 75019, France;
- Received January 14, 2018
- Revised March 18, 2018
- Accepted March 25, 2018
- First published April 18, 2018.
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