Text and Data Mining valid from 2018-07-03
Received: 17 January 2018
Revised: 20 April 2018
Accepted: 30 May 2018
First Online: 3 July 2018
Compliance with Ethical Standards
: This work was previous presented partially at the Academy Health Research Meeting in Boston, Massachusetts, on June 2016; at the American Public Health Association meeting in Denver, Coronado, on November 1, 2016; and at the Academy Health Research Meeting in New Orleans, Louisiana, on June 25, 2017.
: The authors declare that they do not have a conflict of interest.