Text and Data Mining valid from 2018-06-25
Received: 29 March 2018
Accepted: 18 June 2018
First Online: 25 June 2018
Compliance with ethical standards
: Lionel Rebibo, Pauline Leourier, Rachid Badaoui, Fabien Le Roux, Emmanuel Lorne and Jean-Marc Regimbeau have no conflicts of interest or financial ties to disclose.