We thank Dr. Daniel Seabra and Dr. Eliney Ferreira Faria for their collaboration in collecting the samples and Dr. Ligia Maria Kerr for pathological review. This work was supported by São Paulo State Research Foundation - FAPESP (2010/01661-2) and CNPq.
Competing interests
The authors declare they have no competing interests.
Acknowledgements
20 October 2014
We thank Dr. Daniel Seabra and Dr. Eliney Ferreira Faria for their collaboration in collecting the samples and Dr. Ligia Maria Kerr for pathological review. This work was supported by São Paulo State Research Foundation - FAPESP (2010/01661-2) and CNPq.Competing interests
The authors declare they have no competing interests.