Comparison of clinical and procedural variables between patients with and without bile duct stenting: gender, age, BMI, type 2 diabetes mellitus, prior abdominal surgery, cholangitis on admission, abdominal ultrasound, endosonography, ERCP, MRCP, number of bile duct stones >5, bile duct diameter, gallstone diameter, CRP, leukocyte count, g-GT, bilirubin, AP, ALAT, and ASAT. This evidence concerns the gene CRP and gallstones.