title: Erratum to: Flexible Ureterorenoscopy versus Extracorporeal Shock Wave Lithotripsy for the treatment of upper/middle calyx kidney stones of 10-20 mm: a retrospective analysis of 174 patients.
abstract: [This corrects the article DOI: 10.1186/2193-1801-3-557.].
authors.affiliation: Department of Urology, Kafkas University Faculty of Medicine, Kars, Turkey.
authors.forename: Kursat
authors.initials: K
authors.lastname: Cecen
authors.affiliation: Department of Urology, Kafkas University Faculty of Medicine, Kars, Turkey.
authors.forename: Mert Ali
authors.initials: MA
authors.lastname: Karadag
authors.affiliation: Department of Urology, Kafkas University Faculty of Medicine, Kars, Turkey.
authors.forename: Aslan
authors.initials: A
authors.lastname: Demir
authors.affiliation: Department of Urology, Kafkas University Faculty of Medicine, Kars, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Bagcioglu
authors.affiliation: Department of Urology, Kafkas University Faculty of Medicine, Kars, Turkey.
authors.forename: Ramazan
authors.initials: R
authors.lastname: Kocaaslan