1. Research Center for Cancer Diagnosis in Primary Care; Aarhus University; Aarhus C Denmark
2. Research Unit for General Practice; Aarhus University; Aarhus C Denmark
3. Section for General Medical Practice; Aarhus University; Aarhus C Denmark
4. Department of Urology; Aarhus University Hospital Skejby; Aarhus N Denmark
5. King's College London, Cancer Epidemiology and Population Health; Bermondsey Wing, Guy's Hospital; Great Maze Pond London United Kingdom