Hermida, Ramón C
Ayala, Diana E
Smolensky, Michael H
Fernández, José R
Mojón, Artemio
Portaluppi, Francesco
Article History
Received: 11 November 2015
Revised: 16 November 2015
Accepted: 17 November 2015
First Online: 10 December 2015
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.