Text and Data Mining valid from 2019-09-06
Received: 3 April 2019
Accepted: 21 August 2019
First Online: 6 September 2019
Compliance with ethical standards
: Camila Ortiz‑Gomez, David Romero‑Funes, David Gutierrez‑Blanco, Joel S. Frieder, Maria Fonseca‑Mora, Emanuele Lo Menzo, Samuel Szomstein, and Raul J. Rosenthal have no conflicts of interest or financial ties to disclose.