Healthcare System Digital Transformation across Four European Countries: A Multiple-Case Study oleh Federico Fonda, Alessandro Galazzi, Stefania Chiappinotto, Linda Justi, Morten Sønderskov Frydensberg, Randi Lehmann Boesen, Mirna Macur, Erik Andrés Reig, Elisenda Reixach Espaulella, Alvisa Palese