Section to complete information about primary and secondary outcomes including. It includes the metric or method of measurement used and, the time point for every outcome.
      Primary outcome(s): 
    
            
                    "Success on the procedures of stone extraction", timepoint: at the end of surgical procedure. "Morbidity and mortality", timepoint: at the follow-up, on 30 days after procedure.        
         
 
      Key secondary outcomes: 
    
            
                    "Operative time”, timepoint: at the end of surgical procedure. "Hospital stay", timepoint: at the follow-up, on 1-7 days after procedure. "Diagnosis of residual choledocholithiasis", timepoint: at the follow-up, on 2 years after procedure. "Cost of surgical procedure”, timepoint: at the end of hospital stay.