- Correspondence to Dr Mauro Goldbaum, Hospital das Clínicas, Universidade de São Paulo, R. Cristiano Viana, 765/120, São Paulo, SP 05411-001, Brazil;
- Received July 24, 2013
- Revised February 3, 2014
- Accepted May 23, 2014
- First published July 4, 2014.
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