Gamir-Morralla, A
López-Menéndez, C
Ayuso-Dolado, S
Tejeda, G S
Montaner, J
Rosell, A
Iglesias, T
Díaz-Guerra, M
Article History
Received: 3 June 2015
Revised: 19 August 2015
Accepted: 14 September 2015
First Online: 22 October 2015
Competing interests
: The authors declare no conflict of interest