Jiménez, C. M.; Lugo, L. L. .; Martínez Corral, M. E.; Silva Barajas, M. E. . Success Rate of Difficult Biliary Cannulation and Rescue Techniques During Endoscopic Retrograde Cholangiopancreatography at a Tertiary Level Referral Center. International Journal Of Medical Science And Clinical Research Studies 2026, 6, 1546-1554.