Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (FCT), Portugal (Project PTDC/SAU-BEB/67384/2006 FCOMP-01-9124-FEDER-007470)
Text and Data Mining valid from 2020-01-28
Received: 7 December 2018
Accepted: 22 October 2019
First Online: 28 January 2020
: The authors declare that they have no competing interests.