The establishment and implementation of best evidence about bowel preparation for colonoscopy in preschoolers

    Abstract Objective：Through the application of the best evidence of intestinal preparation before colonoscopy for preschoolers，establish the standard of intestinal preparation and evaluate the effect in the process.Methods：Follow the Joanna Briggs Institute(JBI) Evidence Application Practice to work out intestinal preparation indicators before colonoscopy and to develop evidence-based practice protocols including baseline review ......