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Duncan, H F; Galler, K M; Tomson, P L; Simon, S; El-Karim, I; Kundzina, R; Krastl, G; Dammaschke, T; Fransson, H; Markvart, M; Zehnder, M; Bjørndal, L; Dummer, P M H . (2019). European Society of Endodontology position statement: Management of deep caries and the exposed pulp. International Endodontic Journal, (), –. doi:10.1111/iej.13080 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research