title: Peroral cholangioscopy: use of a Roth Net retriever for difficult biliary stones.
authors.affiliation: Department of Gastroenterology, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal.
authors.forename: Vera
authors.initials: V
authors.lastname: Costa Santos
authors.affiliation: Department of Gastroenterology, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal.
authors.forename: Nuno
authors.initials: N
authors.lastname: Nunes
authors.affiliation: Department of Gastroenterology, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal.
authors.forename: Filipa
authors.initials: F
authors.lastname: Ávila
authors.affiliation: Department of Gastroenterology, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal.
authors.forename: Ana Catarina
authors.initials: AC
authors.lastname: Rego
authors.affiliation: Department of Gastroenterology, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal.
authors.forename: José Renato
authors.initials: JR
authors.lastname: Pereira
authors.affiliation: Department of Gastroenterology, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal.
authors.forename: Nuno
authors.initials: N
authors.lastname: Paz
authors.affiliation: Department of Gastroenterology, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal.
authors.forename: Maria Antónia
authors.initials: MA
authors.lastname: Duarte
mesh_terms: D000368:Aged; D042883:Choledocholithiasis / Q000628:therapy*; D016145:Endoscopy, Digestive System / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008297:Male; D016717:Sphincterotomy, Endoscopic