Experience with intraoperative vancomycin application in deformity surgery of patients with secondary scoliosis: A retrospective study at an academic spine center - N. Taheri; P. Köhli; Z. Li; Z. Whang; T.L. Vu-Han; K. Cloeren; A. Koch; S. Tsitsilonis; F. Schömig; T. Khakzad; M. Pumberger (Brain and Spine)