Astrath, Nelson G. C.
Malacarne, Luis C.
Baesso, Mauro L.
Lukasievicz, Gustavo V. B.
Bialkowski, Stephen E.
Article History
Received: 10 February 2014
Accepted: 10 June 2014
First Online: 7 July 2014
Competing interests
: The authors declare no competing financial interests.