Nurse-led Proactive Telephone Follow-up With Patients After Completion of Primary Cancer Treatment

The goal of this randomized study is to test and evaluate nurse-led telephone follow-up intervention in patients primarily curatively treated for breast cancer, colorectal cancer, and prostate cancer. The main question aims to answer: Does this nurse-led telephone follow-up improve patients' quality of life? Participants in both groups will be asked to fill in questionnaires regularly. The intervention group will get a telephone follow-up at predetermined intervals, while the control group will get the care as usual.The investigators will compare intervention and control groups to see if predetermined regular nurse-led telephone follow-up improves quality of life.