M. Ramchand, “Role of Pre-Operative Single Dose Versus Double Dose Antibiotic in Prevention of UTI in Patients Undergoing Ureteroscopy with Negative Urine Culture: Pre-Operative Dose Antibiotic: UTI in Ureteroscopy with Negative Urine Culture”, PJHS-Lahore, vol. 7, no. 6, pp. 32–37, Jun. 2026.