Endoscopy, Table of Contents Endoscopy 1992; 24(4): 273-275DOI: 10.1055/s-2007-1010481 © Georg Thieme Verlag KG Stuttgart · New York ESWL: A Method on Retreat? II. ESWL or ISWL for Difficult Bile Duct StonesC. Ell Department of Medicine I, University of Erlangen-Nürnberg, Germany Recommend Article Abstract PDF Download Buy Article PDF (718 kb)