A challenging case of giant biliary stones in a patient with situs inversus totalis: conventional ERCP combined with intraductal cholangioscopy and laser lithotripsy - Téllez-Ávila, Félix I.; Pattel, Sandeep; Duarte-Medrano, Gilberto; Seenath, Marlon; Herrera-Mora, David R.; Lopez-Arce, Gustavo (Endoscopy, 2017)