Funding for this research was provided by:
Quality Enhancement Research Initiative
Text and Data Mining valid from 2019-01-10
Received: 10 August 2018
Revised: 4 December 2018
Accepted: 10 December 2018
First Online: 10 January 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This type of study is exempt by the Institutional Review Board.
: For this type of study, formal consent is not required.