Comment on: "Influence of pre-stenting on RIRS outcomes. Inferences from patients of the Global Multicentre Flexible Ureteroscopy Outcome (FLEXOR) Registry"
1 Department of Urology, Guandong Key Laboratories, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China - giorgiomazzon83@gmail.com.
2 Institute of Urology, University College Hospitals of London, London, UK.
3 Department of Urology, Guandong Key Laboratories, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.