Funding for this research was provided by:
Received: 2 July 2020
Accepted: 12 October 2020
First Online: 21 October 2020
Ethics approval and consent to participate
: The protocol and all study materials were reviewed and approved by the IRB of the National University of Natural Medicine (NUNM; MetaG SPM IRB, #091515-B).
: Not applicable.
: The authors declare that they have no competing interests.