Hubungan antara tekanan detrusor yang dinilai melalui urodinamik dengan teknik berkemih pada penderita cedera medulla spinalis lesi suprasakral di Rumah Sakit Umum Pusat Fatmawati = A relationship between detrusor pressure measured by urodynamic and voiding technique in suprasacral lesion spinal cord injury patient in Fatmawati general hospital