. Author manuscript; available in PMC: 2021 Jul 9.
Published before final editing as: Epidemics. 2020 Jan 9;30:100385. doi: 10.1016/j.epidem.2020.100385
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).