American Society for Gastrointestinal Endoscopy guideline on role of endoscopy in the diagnosis of malignancy in biliary strictures of undetermined etiology: methodology and review of evidence
                                                Gastrointest. endosc; 98 (5), 2023                                            
                                        
                                                                                    
                                                Biliary strictures of undetermined etiology pose a diagnostic challenge for endoscopists. Despite advances in technology, diagnosing malignancy in biliary strictures often requires multiple procedures. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework was used to rig...                                            
                                        
                                                                                    
                                        
                                                                                    
                                                                             
                        