1. Waaler H.T., Dødelighetsforskjeller mellom Norge og Sverige. Kunnskapssenteret. Rapport 3–2005. Oslo: Norwegian Institute of Public Health, 2005. ISSN electronic: 1503–9544.
2. Raknes G., Strøm M.S. Dødsårsaker i Sverige og Noreg 2010–20. Folkehelseinstitutt, Oslo: 2021. 〈https://www.fhi.no/hn/helseregistre-og-registre/dodsarsaksregisteret/dodsarsaker-i-sverige-og-noreg-20102020/〉 Accessed May 10, 2023.
3. Between lockdowns and calm downs. Comparing the COVID-19 responses of Norway and Sweden;Askim;Local Gov Stud,2022
4. The quantification of vaccine uptake in the Nordic countries and impact on key indicators of COVID-19 severity and healthcare stress level via age range comparative analysis;Islind;Sci Rep,2022
5. Long-term mortality following SARS-CoV-2 infection: a national cohort study from Estonia;Uusküla;Lancet Reg Health Eur,2022