HUBUNGAN DERAJAT KLINIS DAN GANGGUAN KOGNITIF PADA PENDERITA PARKINSON DENGAN MENGGUNAKAN MONTREAL COGNITIVE ASSESMENT VERSI INDONESIA (MoCA-Ina) RELATIONSHIP BETWEEN PARKINSON CLINICAL DEGREE AND COGNITIVE IMPAIRMENT ON PARKINSON PATIENTS BY USING MONTREAL COGNITIVE ASSESMENT OF INDONESIAN VERSION (MoCA-Ina) - ISMAWATI, ISMAWATI (2013)