Gregers, M C T, Andelius, L, Kjoelbye, J S, Grabmayr, A J, Jakobsen, L K, Christensen, N B, Kragh, A R, Hansen, C M, Lyngby, R M, Vaeggemose, U, Torp-Pedersen, C, Ersbøll, A K & Folke, F 2023, ' Association Between Number of Volunteer Responders and Interventions Before Ambulance Arrival for Cardiac Arrest ', Journal of the American College of Cardiology, vol. 81, no. 7, pp. 668-680 . https://doi.org/10.1016/j.jacc.2022.11.047