Please assess the completion status of the following clinical trial:

Trial Title: RIRS Versus ESWL for the Treatment of Renal Stones

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* renal stone measuring 6 to 20 mm~* signing informed consent~* WHO performance status 0-2~Exclusion Criteria:~* Other stone \>5 mm~* concomitant ureteral stones~* BMI \> 35~* severe coagulopathy~* impossibility to sign informed consent~* pregnancy~* age \< 18 years old or \> 85

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 85 Years
- Healthy Volunteers: t

Study Arms:
- RIRS (retrograde intrarenal surgery) (Type: EXPERIMENTAL): In the first arm (RIRS) the patients will be treated by a standard retrograde ureterorenoscopy and Holmium laser lithotripsy. Preoperative exams will be abdomen ultrasound and Xray (CT in case of stones \> 15 mm), urine analysis and culture (according to all the more recent guidelines). Surgeries will be performed under general or spinal anesthesia, according to anesthesiologist evaluation. According with standard technique, ureteroscopy will be performed using both rigid and flexible ureteroscope. Lithotripsy will be performed by Holmium laser. Major stone fragments will be removed at the end of the procedure. Finally a double J ureteral stent will be push in specific cases depending on intraoperative findings (length of the procedure, macroscopic view of the ureter, residual stones etc.). RIRS will be an outpatients procedure with an hospital stay \<23 hours. Some patients may require a longer hospital stay due to specific pre-operative diseases or intra/post-operative events.
- ESWL (extracorporeal shockwaves lithotripsy) (Type: EXPERIMENTAL): In the second arm (ESWL) the patients will be treated by a standard extracorporeal shock waves lithotripsy (ESWL). Preoperative exams will be the same as first arm. No general or spinal anaesthesia will be used, but just intravenous medications if required. Ultrasound and/or X-Ray will be used to locate the stone. Power and number of shock waves will consist in 20-24 KV and 3000-3500 sw respectively, according to individual tolerance. ESWL will be an outpatients procedure with an hospital stay \<23 hours. Some patients may require a longer hospital stay due to specific pre-operative diseases or intra/post-operative events.

Based on this trial design, predict the completion outcome and termination type (if applicable).