KUMAR, P.; RANA, A. K. S. Three-port versus four-port laparoscopic cholecystectomy: a comparative study at a tertiary care centre in North India. International Surgery Journal, [S. l.], v. 5, n. 2, p. 426–432, 2018. DOI: 10.18203/2349-2902.isj20180014. Disponível em: https://www.ijsurgery.com/index.php/isj/article/view/2415. Acesso em: 1 feb. 2026.