Ortiz-Álvarez, Rüdiger http://orcid.org/0000-0002-8553-5420
Triadó-Margarit, Xavier
Camarero, Lluís
Casamayor, Emilio O.
Catalan, Jordi
Article History
Received: 18 November 2017
Accepted: 1 March 2018
First Online: 13 March 2018
Competing Interests
: The authors declare no competing interests.