García-Inclán, Cristina
López-Hernández, Alejandro
Alonso-Guervós, Marta
Allonca, Eva
Potes, Sira
Melón, Santiago
López, Fernando
Llorente, José Luis
Hermsen, Mario
Article History
Received: 25 February 2014
Accepted: 23 April 2014
First Online: 12 May 2014
Competing interests
: The authors declare no competing financial interests.