Comparative performance of NAR, SII and PIV in predicting infliximab primary non-response in biologic-naïve ulcerative colitis patients - Yasmine Abouelfetouh Elshaer; Hassan Elbatae; Shimaa El Sharawy; Dalia Elsayed Sherief; Mahmoud A. Elkerdawy; Ibrahiem Amer (The Egyptian Journal of Internal Medicine, 2026)