... States standpoint, participated in the design of the study, performed the statistical analysis, and participated in the drafting of the manuscript. Allauthors read and approved the final manuscript.Competing ... as the first-line test in the case of suspectedappendicitis, and its use is increasing [15,16,20]. In this international study, we compared the perfor-mance of CT and US in the evaluation of ... review and drafted the manuscript. TZ conceived of the study from the Israeli standpoint, participated in the design of the study,and helped draft the manuscript. SW conceived of the study from the United...