A. M. Abdelaziz Hassan, A. M. Abdelaziz, M. E. Esmat, H. Hamdy, and M. M. Elsebae, “One-stage lapro-endoscopic procedure in the management of concomitant gallbladder and common bile duct stones: institutional experience”, Int Surg J, vol. 6, no. 5, pp. 1447–1452, Apr. 2019.