Text and Data Mining valid from 2018-04-01
First Online: 9 April 2018
Compliance with Ethical Standards
: Francesca Borrelli, Cristiano Colalto, Domenico V. Delfino, Marcello Iriti, and Angelo A. Izzo have no conflicts of interest that are directly relevant to the content of this manuscript.
: No funding was received in the preparation of this systematic review.