Oktariza, Yasinda, Lia Amalia, Sobaryati Sobaryati, and Media Y Kurniawati. 2025. “Validation and Reliability of the Indonesian PDQ-39 Questionnaire in Parkinson’s Disease Patients”. Acta Pharmaceutica Indonesia 50 (2):117 -25. https://doi.org/10.5614/api.v50i2.25127.