Text and Data Mining valid from 2019-01-01
Received: 4 December 2018
Accepted: 11 December 2018
First Online: 1 January 2019
Compliance with ethical standards
: The authors certify that they have no affiliation or financial involvement in any organization with a direct financial interest in the subject matter discussed in the manuscript.
: All procedures performed in studies discussed in the manuscript were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study (commentary) formal consent is not required.