Text and Data Mining valid from 2018-04-02
Received: 20 February 2017
Revised: 20 March 2018
Accepted: 27 March 2018
First Online: 2 April 2018
Compliance with ethical standards
: None of the authors has any potential conflict of interest.
: The study was approved by the Western Institutional Review Board for the Protection of Human Subjects (IRB#: 20152881).