Chiner-Oms, Álvaro http://orcid.org/0000-0002-0463-0101
González-Candelas, Fernando http://orcid.org/0000-0002-0879-5798
Comas, Iñaki http://orcid.org/0000-0001-5504-9408
Article History
Received: 22 November 2017
Accepted: 19 February 2018
First Online: 28 February 2018
Competing Interests
: The authors declare no competing interests.