<qa>  How many endoscopists were blind to the results of the others interpretationTo determine degree of interobserver variability regarding characterization of variceal size between endoscopists, photographs of esophageal varices were taken during endoscopies and randomly selected images were circulated among 5 endoscopists, 2 with 5 years experience in practice and 3 with 15 years experience. The endoscopists were blinded to the results of the others interpretation and were asked to characterize the endoscopic images as either small,large, or absent varices. 