Martínez-Nava, G A
Torres-Poveda, K
Lagunas-Martínez, A
Bahena-Román, M
Zurita-Díaz, M A
Ortíz-Flores, E
García-Carrancá, A
Madrid-Marina, V
Burguete-García, A I
Article History
Received: 27 June 2014
Revised: 2 September 2014
Accepted: 24 September 2014
First Online: 6 November 2014
Competing interests
: The authors declare no conflict of interest.