B. ÖZER, E. SERİN, Y. GÜMÜRDÜLÜ, G. GÜR, U. YILMAZ, and S. BOYACIOĞLU, “Endoscopic extraction of living fasciola hepatica: Case report and literature review”, Turkish Journal of Gastroenterology, vol. 14, no. 1, pp. 74–77, Jan. 2003.