- Correspondence to Professor Sílvia Ferreira de Sousa, Department of Dentistry, Biological Sciences and Health Institute, Universidade Federal de Sergipe, Rua Cláudio Batista, Aracaju, CEP 49.060-108, Brazil;
- Received September 28, 2017
- Revised October 16, 2017
- Accepted October 22, 2017
- First published November 10, 2017.
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