Text and Data Mining valid from 2019-09-11
Received: 8 January 2019
Accepted: 29 August 2019
First Online: 11 September 2019
Compliance with ethical standards
: T. Chan, A. Karimuddin, M. Raval, P. T. Phang, V. Tang, and C. Brown have no conflicts of interest or financial ties to disclose.