American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). Arlington, VA: American Psychiatric Publishing; 2013.
[2]
World Health Organization. International Statistical Classification of Diseases and Related Health Problems, 10th Revision (ICD-10). Geneva: WHO; 2016.
[3]
Samii A, Nutt JG, Ransom BR. Parkinson's disease. Lancet. 2004;363(9423):1783-1793.
[4]
Parkinsonism & Related Disorders. Clinical guidelines for the management of Parkinson's disease. Elsevier; 2020.
[5]
National Institute for Health and Care Excellence (NICE). Parkinson's disease in adults: diagnosis and management. NICE guideline NG71. 2017.