26. Correlations Between Oral Pre-exposure Prophylaxis Initiations and Policies, 2021 Bookmark Format Single study
28. Country Memberships in Selected Intergovernmental Organizations and Accession to Selected Regional and Global Treaty Regimes: Global, Country-Year Format, 1955-2010 Bookmark Format Single study
32. COVID-19 Government Response Tracker (University of Oxford - Blavatnik School of Government) Bookmark Format Series - ongoing
33. COVID-19 Pandemic Preparedness - Infection Rate and Infection Fatality Ratio Estimates 2020-2021 Bookmark Format Single study
40. Cross-National Variation in School Reopening Measures during the COVID-19 Pandemic Bookmark Format Single study