<qa>  What is the VAS score?Immediately after the procedure the pain assessed by the VAS score will be recorded and the patients are given a QOL questionnaire EORTC QLQ-BLS24 and a stamped envelope and are asked to return it one week later. The patients will be telephoned after 5 days to remind on the questionnaire and to ash, whether they has had a urinary infection after the procedure. 