Received: 22 April 2020
Accepted: 19 August 2020
First Online: 10 September 2020
Ethics approval and consent to participate
: Data used in this publication were acquired with administrative permission from the following states: NM, ME, MN, MT, NE, VT, WA, FL, NC, WV, AK, CA, KY, OH, TX, AZ, AR, GA, HI, LA, MI, NY, OK, PA, SC, CT, IL, IA, NV, OR, SD, TN, VA, and WI.
: The authors declare that they have no competing interests.