BALAJIRAO, K. S. . A Cross-Sectional Study to Determine Predictive Factors for Difficult Laparoscopic Cholecystectomy Using Ultrasonographic Criteria. Journal of Biomedical and Pharmaceutical Research, [S. l.], v. 10, n. 6, 2021. Disponível em: http://www.jbpr.in/index.php/jbpr/article/view/1280. Acesso em: 17 apr. 2026.