Randomization
All included patients gave informed consent before study initiation. Patients were randomized to 1 of the 2 bowel cleansing regimens at an allocation ratio of 1:1. A computer-assisted randomization process with sequences was performed using the block method (block of 2 alternating with block of 4). The statistician generated the allocation sequence and assigned the participants. The health care provider enrolled the participants. All endoscopists and endoscopy nurses were blinded to participant allocation (Fig. CONSORT flow diagram.