1. Western General Hospital; Department of Urology; Crewe Road South Edinburgh UK EH4 2XU
2. University of Aberdeen; Health Services Research Unit; 3rd Floor, Health Sciences Building Foresterhill Aberdeen Scotland UK AB25 2ZD
3. Newcastle University; Institute of Cellular Medicine; Newcastle upon Tyne Tyne and Wear UK NE7 7DN
4. Aberdeen Royal Infirmary, NHS Trust; Ward 44; Foresterhill Aberdeen Scotland UK AB25 2ZN