GUPTA, P.; KUMAR, S.; KESHARI, A. K. Assessment of preoperative factors for challenging laparoscopic cholecystectomy. International Journal of Health and Clinical Research, [S. l.], v. 4, n. 8, p. 189–191, 2021. Disponível em: https://www.ijhcr.com/index.php/ijhcr/article/view/1444. Acesso em: 17 mar. 2026.