Cardo, Lucía F
Coto, Eliecer
Ribacoba, René
Mata, Ignacio F
Moris, Germán
Menéndez, Manuel http://orcid.org/0000-0002-5218-0774
Alvarez, Victoria
Article History
Received: 20 February 2014
Revised: 14 March 2014
Accepted: 24 March 2014
First Online: 24 April 2014
Competing interests
: The authors declare no conflict of interest.