Peñuelas, Josep
Farré-Armengol, Gerard
Llusia, Joan
Gargallo-Garriga, Albert
Rico, Laura
Sardans, Jordi
Terradas, Jaume
Filella, Iolanda
Article History
Received: 14 April 2014
Accepted: 3 September 2014
First Online: 22 October 2014
Competing interests
: The authors declare no competing financial interests.