Gargallo-Garriga, Albert
Sardans, Jordi
Pérez-Trujillo, Míriam
Rivas-Ubach, Albert
Oravec, Michal
Vecerova, Kristyna
Urban, Otmar
Jentsch, Anke
Kreyling, Juergen
Beierkuhnlein, Carl
Parella, Teodor
Peñuelas, Josep
Article History
Received: 10 June 2014
Accepted: 3 October 2014
First Online: 29 October 2014
Competing interests
: The authors declare no competing financial interests.