Information Infrastructures within European Health Care: Working with the Installed Base - Margunn Aanestad, Miria Grisot, Ole Hanseth, Polyxeni Vassilakopoulou; Aanestad, Margunn; Grisot, Miria; Hanseth, Ole; Vassilakopoulou, Polyxeni (Cham Springer International Publishing, 2017)