Funding for this research was provided by:
University of California, Los Angeles
Text and Data Mining valid from 2020-04-07
Received: 2 October 2019
Accepted: 5 March 2020
First Online: 7 April 2020
Ethics approval and consent to participate
: This study was determined to be exempt from IRB regulation at the University of California, Los Angeles. Participant consent was not applicable as this study was not human subjects research and used state-level data.Consent for publication: Not applicable.
: The authors declare that they have no competing interests.