1. Department of Endoscopy-Endourology, Minimally Invasive Surgery Centre, Caceres, Spain.
2. Department of Urology, Zaragoza University, Zaragoza, Spain.
3. Department of Urology, Hospital Costa Del Sol, Malaga, Spain.
4. Department of Urology, Miguel Servet University Hospital, Zaragoza, Spain.
5. Department of Pathology, Extramadura University, Caceres, Spain.
6. Department of Scientific Direction, Minimally Invasive Surgery Centre, Caceres, Spain.