1. Center for General Practice , Aalborg University , Aalborg , Denmark
2. Department of Clinical Pharmacology , Aalborg University Hospital , Aalborg , Denmark
3. Department of Clinical Medicine , Aalborg University , Aalborg , Denmark
4. Department of Physiotherapy , University College of Northern Denmark , Aalborg , Denmark
5. Department of Health Science and Technology, Faculty of Medicine , Aalborg University , Aalborg , Denmark