Impact of BMI on stone clearance and surgical outcomes in retrograde intrarenal surgery: A comparative analysis across four BMI categories. - Rehman, Assad ur; Nusrat, Nadeem Bin; Zafar, Nauman; Muhammad, Shujah; Imtiaz, Sarmad; Hanan, Hafiz Abdul; Asghar, Ammar; Ali, Sharafat; Gondal, Mustafa Khaleel; Imtiaz, Saira; Arshad, Moin (Urologia Journal, 2026)