 The study is a cluster randomised controlled trial where all general practices in the area of Moss city in Norway will be asked to participate. Half of the physicians will constitute the intervention group while the other half will serve as control group. Each participating doctor in both groups will recruit patients according to the eligibility criteria. The doctors in the intervention group will be provided with a course to learn the intervention and have a manual to follow for each patient. All participating patients of both groups will be asked to meet regularly for data collection. 