Text and Data Mining valid from 2019-03-14
Received: 21 October 2018
Accepted: 6 March 2019
First Online: 14 March 2019
Compliance with ethical standards
: Diane Mege, Alice Frontali, Gianluca Pellino, Samuel Adegbola, Léon Maggiori, Janindra Warusavitarne and Yves Panis have no conflict of interest or financial ties to disclose.