Oliveira, C S F
Pereira, H
Alves, S
Castro, L
Baltazar, F
Chaves, S R
Preto, A
CĂ´rte-Real, M
Article History
Received: 12 January 2015
Revised: 24 April 2015
Accepted: 7 May 2015
First Online: 18 June 2015
Competing interests
: The authors declare no conflict of interest.