Text and Data Mining valid from 2018-05-16
Received: 23 January 2018
Accepted: 9 May 2018
First Online: 16 May 2018
Compliance with ethical standards
: Emilie Liot, Michela Assalino, Nicolas Christian Buchs, Boris Schiltz, Jonathan Douissard, Philippe Morel, and Frédéric Ris have no conflicts of interest or financial ties to disclose.