- Correspondence to Dr Maria Clara de Magalhães-Barbosa, Department of Paediatrics, Instituto D’Or de Pesquisa e Ensino (IDOR), Rio de Janeiro, RJ 22281-080, Brazil;
- Received 15 May 2016
- Revised 31 July 2017
- Accepted 1 August 2017
- Published in print 3 October 2017.
- Published online 4 October 2017.
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