Izquierdo-Gomez, R
Martínez-Gómez, D
Fernhall, B
Sanz, A
Veiga, Ó L
,
Article History
Received: 1 May 2015
Revised: 7 July 2015
Accepted: 3 August 2015
First Online: 21 August 2015
Competing interests
: The authors declare no conflict of interest.