Text and Data Mining valid from 2018-07-13
Received: 11 March 2018
Accepted: 6 July 2018
First Online: 13 July 2018
Compliance with ethical standards
: Drs Maria Escolino, Giovanna Riccipetitoni, Atsuyuki Yamataka, Imran Mushtaq, Go Miyano, Paolo Caione, Fabio Chiarenza, Peter Borzi, and Ciro Esposito declare that they have no conflicts of interest or financial ties to disclose.