Department of Urology, Faculty of Medicine Universitas Indonesia, Haji Adam Malik Hospital, Medan, Indonesia; Division of Urology, Department of Surgery, Faculty of Medicine Universitas Sumatera Utara, Haji Adam Malik Hospital, Medan, Indonesia
Patandung, R., Department of Urology, Faculty of Medicine Universitas Indonesia, Haji Adam Malik Hospital, Medan, Indonesia; Prapiska, F.F., Division of Urology, Department of Surgery, Faculty of Medicine Universitas Sumatera Utara, Haji Adam Malik Hospital, Medan, Indonesia; Kadar, D.D., Division of Urology, Department of Surgery, Faculty of Medicine Universitas Sumatera Utara, Haji Adam Malik Hospital, Medan, Indonesia