Procedural Characteristics and Cannulation Difficulty During ERCP for Choledocholithiasis: Experience from a Tertiary Care Center. World Journal of Current Medical and Pharmaceutical Research, India, v. 8, n. 3, p. 208–213, 2026. DOI: 10.37022/wjcmpr.v8i3.458. Disponível em: https://wjcmpr.org/index.php/journal/article/view/458. Acesso em: 25 oct. 2026.