Funding for this research was provided by:
Generalitat de Catalunya (2016FI_B00202)
Ministerio de Economía y Competitividad (BES-2013-066335, CGL2015-63777)
Text and Data Mining valid from 2018-11-21
Received: 1 May 2018
Accepted: 1 November 2018
First Online: 21 November 2018
Change Date: 11 July 2019
Change Type: Correction
Change Details: A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
: The authors declare no competing interests.