de Mesquita Coutinho, P R
Cristante, A F
de Barros Filho, T E P
Ferreira, R
dos Santos, G B
Article History
Received: 29 June 2015
Revised: 25 August 2015
Accepted: 3 September 2015
First Online: 20 October 2015
Competing interests
: The authors declare no conflict of interest.