?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Georgiou&rft.au=Georgiou%2C+R&rft.aufirst=R&rft.date=17+February+2017&rft.atitle=Efficacy+and+safety+of+non-operative+treatment+for+acute+appendicitis%3A+a+meta-analysis&rft.volume=139&rft.issue=3&rft.title=Pediatrics&rft.issn=0031-4005&rft.genre=article