Di Mitri, R. and Mocciaro, F. (2017) “Single-operator holmium laser lithotripsy under direct peroral cholangioscopy using an ultra-slim upper endoscope in a patient with a large stone in the common bile duct”, Turkish Journal of Gastroenterology, 28(6), pp. 505–509. doi: 10.5152/tjg.2017.17111.