Received: 6 March 2018
Accepted: 16 September 2018
First Online: 20 September 2018
Ethics approval and consent to participate
: This study was approved by the California State University, Northridge institutional review board on April 30, 2015 (reference number 1415–178), and all participants provided their written informed consent. Respondents were informed of potential risks and that participation was voluntary, identifying information (excluding age and gender) was not being requested, and that compensation for participation was not being offered.
: Not applicable.
: The authors declare that they have no competing interests.
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