Text and Data Mining valid from 2019-03-13
First Online: 13 March 2019
Compliance with Ethical Standards
: Hannah Yejin Kim, Parth J. Upadhyay, Alia Fahmy, Xiaoman Liu, Janna K. Duong, and Alan V. Boddy declare they have no conflicts of interest.
: No sources of funding were used for this review.