Morales, E
Rodriguez, A
Valvi, D
Iñiguez, C
Esplugues, A
Vioque, J
Marina, L S
Jiménez, A
Espada, M
Dehli, C R
Fernández-Somoano, A
Vrijheid, M
Sunyer, J
Article History
Received: 27 March 2014
Revised: 25 August 2014
Accepted: 2 September 2014
First Online: 5 September 2014
Competing interests
: The authors declare no conflict of interest.