Funding for this research was provided by:
National Science Foundation (IIS 1618814)
Fondo Nacional de Desarrollo Científico y Tecnológico (1171058)
Text and Data Mining valid from 2019-05-24
Received: 29 October 2018
Accepted: 8 May 2019
First Online: 24 May 2019
: The authors declare that they have no competing interests.