Letter to Editor: Comparison of flexible vacuum-assisted ureteral access sheath versus conventional sheath combined with single-use flexible ureteroscope in the treatment of renal calculi
1 Department of Urology, Ankara Ataturk Sanatoryum Training and Research Hospital, Ministry of Health, University of Health Sciences, Ankara, 06290, Turkey. bahadirhaberal@gmail.com.
2 Department of Urology, Faculty of Medicine, Istanbul University, Istanbul, Turkey.