1. National Coronavirus Lockdowns: The Interplay of Tightening and Easing
2. ptpmcrender.pdf. Available from: https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC7286282&blobtype=pdf. Accessed October 20, 2023.
3. Shumskaya M, Benjamin S, Niepielko MG, Lorusso N. Statistics with Epidemiology of COVID-19; 2021. doi:10.25334/H1HE-5Z05
4. National Health Interview Survey, COVID-19, and Online Data Collection Platforms: Adaptations, Tradeoffs, and New Directions