Funding for this research was provided by:
Colorado Department of Public Health and Environment (96947)
Received: 21 December 2019
Accepted: 20 August 2020
First Online: 17 September 2020
Ethics approval and consent to participate
: The study was approved by the University of Colorado Boulder’s Institutional Review Board (protocols 15–0797 and 16–0768). Each participant provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.