- Correspondence to Dr Maria Carmo Pereira Nunes, Department of Internal Medicine, School of Medicine of the Federal University of Minas Gerais, Av. Professor Alfredo Balena, 190, Santa Efigênia, 30130 100 – Belo Horizonte, MG, Brazil;
- Received 15 December 2014
- Revised 9 March 2015
- Accepted 13 March 2015
- Published online 24 July 2015.
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