Subsequently, a prospective randomized (waiting-list) controlled trial (RCT) will be performed. Information from the feasibility study will be used to modify the RCT when necessary. In the RCT, patients are randomized to early cognitive rehabilitation (3 months after surgery) or to a waiting-list control condition. The waiting-list control group will be offered the same cognitive rehabilitation program after they have undergone all study assessments. Assessment of cognitive performance and self-reported symptoms will be performed prior to surgery (T0), before cognitive rehabilitation (3 months after surgery, T3), immediately after cognitive rehabilitation (6 months after surgery, T6), and at half-year follow up (12 months after surgery, T12).