UpToDate
https://www.uptodate.com/contents/acute-complicated-urinary-tract-infection-including-pyelonephritis-in-adults?search=acute-complicated-cystitis-&source=search_result&selectedTitle=1%7E17&usage_type=default&display_rank=1
WebPeterson J, Kaul S, Khashab M, et al. A double-blind, randomized comparison of levofloxacin 750 mg once-daily for five days with ciprofloxacin 400/500 mg twice-daily for 10 days for the treatment of complicated urinary tract infections and acute pyelonephritis. Urology 2008; 71:17.
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