Espinoza, J. Horacio
Reynaga-Hernández, Elizabeth
Ruiz-García, Jaime
Montero-Morán, Gabriela
Sanchez-Dominguez, Margarita
Mercado-Uribe, Hilda
Article History
Received: 10 May 2015
Accepted: 12 November 2015
First Online: 14 December 2015
Competing interests
: The authors declare no competing financial interests.