- Correspondence to Dr Maria Clara de Magalhães Barbosa, Instituto D'Or de Pesquisa e Ensino (IDOR), Rua Diniz Cordeiro 30, Rio de Janeiro, RJ 22281-100, Brazil;
- Received 30 June 2016
- Revised 5 February 2017
- Accepted 10 February 2017
- Published online 16 March 2017.
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