Text and Data Mining valid from 2019-06-19
Received: 9 April 2019
Accepted: 12 June 2019
First Online: 19 June 2019
Compliance with ethical standards
: The author (Dr. Zerrweck) and coauthors (Dr. Arana Dr. Calleja, Dr. Rodríguez, Dr. Moreno, Dr. Pantoja, and Dr. Donatini) have no conflict of interest or financial ties to disclose.
: For this type of study, formal consent is not required.