E. M. Aboulfeth, H. EL Kaoui, M. Tbouda, M. Bouzroud, M. Moujahid, and A. Bounaim, “Gallbladder Mixed Neuroendocrine-Non-Neuroendocrine Neoplasms: A Case Report”, ijirms, vol. 5, no. 04, p. 138 to 142, Apr. 2020.