Syam, A. F., S. Wafa, and D. Makmun. “The Role of Per Oral Cholangiopancreatoscopy (POCPS) in Complicated Pancreaticobiliary Disease”. Acta Medica Indonesiana, vol. 47, no. 2, May 2016, http://actamedindones.org/index.php/ijim/article/view/53.