- Correspondence to Dr Ana Marli Christovam Sartori, Av Dr Eneas de Carvalho Aguiar, 255, 4o andar, sala 4028. Sao Paulo, SP 05403 000, Brazil;
- Accepted 10 August 2010
- Published in print 1 March 2012.
- Published online 2 February 2012.
- Published first 30 September 2010.
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