- Correspondence to Dr Mario Fernando Prieto Peres, Albert Einstein Hospital, R Joaquim Eugenio de Lima, 881 cj 709, São Paulo 01403-001, Brazil;
- Received 2 March 2016
- Revised 5 April 2016
- Accepted 21 April 2016
- Published in print 1 October 2016.
- Published online 13 September 2016.
- Published first 10 May 2016.
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