43. Institutional Origins of COVID-19 Public Health Protective Policy Response (PPI) Bookmark Format Single study
44. INTERSECT: International Survey of Childbirth-Related Trauma, 2021-2024 Bookmark Format Single study
49. Oxford Supertracker The Global Directory for COVID Policy Trackers and Surveys Bookmark Format Data archive or collection
50. Pre-Vaccine Era COVID-19 Infection Fatality Ratio Estimates by Age, Time, and Location 2020-2021 Bookmark Format Single study
59. World Health Organization. Regional Office for Europe. Data. Bookmark Format Data archive or collection