- Correspondence to Dr Luis Henrique de Castro-Afonso, Division of Interventional Neuroradiology, Medical School of Ribeirão Preto, University of São Paulo, Avenida Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, São Paulo, Brazil, 14048-090;
- Received April 7, 2017
- Revised May 13, 2017
- Accepted May 16, 2017
- First published June 9, 2017.
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