Warli S.M., Department of Surgery, Division of Urology, Faculty of Medicine, Universitas Sumatera Utara, Haji Adam Malik General Hospital, Medan, Indonesia, Department of Urology, Universitas Sumatera Utara, Universitas Sumatera Utara Hospital, Medan, Indonesia; Nabil R.A., Department of Urology, Faculty of Medicine, Universitas Indonesia – Haji Adam Malik General Hospital, Medan, Indonesia; Kadar D.D., Department of Surgery, Division of Urology, Faculty of Medicine, Universitas Sumatera Utara, Haji Adam Malik General Hospital, Medan, Indonesia; Prapiska F.F., Department of Surgery, Division of Urology, Faculty of Medicine, Universitas Sumatera Utara, Haji Adam Malik General Hospital, Medan, Indonesia; Siregar G.P., Department of Surgery, Division of Urology, Faculty of Medicine, Universitas Sumatera Utara, Haji Adam Malik General Hospital, Medan, Indonesia