FIGURE 2. Incidence of immediate complications in relation to the time of obstruction in both treatment groups. The rate of patients disobstructed within 48 hours is between brackets. The time of admission (mean) is represented by a filled circle, the patients with spontaneous disobstruction by diamond shapes, and those who underwent ERCP ± ES by triangle shapes. The empty shapes (diamonds and triangles) represent the patients without immediate complications and the filled shapes, those with complications.