Text and Data Mining valid from 2018-11-21
Received: 7 November 2018
Accepted: 16 November 2018
First Online: 21 November 2018
Compliance with ethical standards
: The authors of this work certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in this manuscript.
: NIS data are de-identified and publicly available. The Baylor College of Medicine Institutional Review Board classified this study as exempt.