1. Barone P, Erro R, Picillo M. Quality of life and nonmotor symptoms in Parkinson’s disease. Int Rev Neurobiol 2017; 133: 499-516.
2.
Bezdicek O, Růžička F, Fendrych Mazancova A, Roth J, Dušek P, Mueller K, Růžička E, Jech R. Frontal assessment battery in Parkinson’s disease: validity and morphological correlates. J Int Neuropsychol Soc 2017; 23: 675-684.
3.
Burke RE, O’Malley K. Axon degeneration in Parkinson’s disease. Exp Neurol 2013; 246: 72-83.
4.
Buysse DJ, Reynolds CF 3rd, Monk TH, Berman SR, Kupfer DJ. The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry Res 1989; 28: 193-213.
5.
Chaudhuri KR, Martinez-Martin P, Brown RG, Sethi K, Stocchi F, Odin P, Ondo W, Abe K, Macphee G, Macmahon D, Barone P, Rabey M, Forbes A, Breen K, Tluk S, Naidu Y, Olanow W, Williams AJ, Thomas S, Rye D, Tsuboi Y, Hand A, Schapira AH. The metric properties of a novel non-motor symptoms scale for Parkinson’s disease: Results from an international pilot study. Mov Disord 2007; 22: 1901-1911.
6.
Chen YF, Tseng YL, Lan MY, Lai SL, Su CS, Liu JS, Chang YY. The relationship of leukoaraiosis and the clinical severity of vascular Parkinsonism. J Neurol Sci 2014; 346: 255-259.
7.
Cheon SM, Park KW, Kim JW. Identification of daily activity impairments in the diagnosis of Parkinson disease dementia. Cogn Behav Neurol 2015; 28: 220-228.
8.
Choi SM, Yoon GJ, Jung HJ, Kim BC. Analysis of characteristics affecting instrumental activities of daily living in Parkinson’s disease patients without dementia. Neurol Sci 2019; 40: 1403-1408.
9.
Emre M, Aarsland D, Brown R, Burn DJ, Duyckaerts C, Mizuno Y, Broe GA, Cummings J, Dickson DW, Gauthier S, Goldman J, Goetz C, Korczyn A, Lees A, Levy R, Litvan I, McKeith I, Olanow W, Poewe W, Quinn N, Sampaio C, Tolosa E, Dubois B. Clinical diagnostic criteria for dementia associated with Parkinson’s disease. Mov Disord 2007; 22: 1689-1707.
10.
Fazekas F, Chawluk JB, Alavi A, Hurtig HI, Zimmerman RA. MR signal abnormalities at 1.5 T in Alzheimer’s dementia and normal aging. AJR Am J Roentgenol 1987; 149: 351-356.
11.
Feldmann A, Illes Z, Kosztolanyi P, Illes E, Mike A, Kover F, Balas I, Kovacs N, Nagy F. Morphometric changes of gray matter in Parkinson’s disease with depression: a voxel-based morphometry study. Mov Disord 2008; 23: 42-46.
12.
Folstein MF, Folstein SE, McHugh PR. “Mini-mental state”. A practical method for grading the cognitive state of patients for the clinician. J Psychiatr Res 1975; 12: 189-198.
13.
Foster ER. Instrumental activities of daily living performance among people with Parkinson’s disease without dementia. Am J Occup Ther 2014; 68: 353-362.
14.
Gao Y, Nie K, Mei M, Guo M, Huang Z, Wang L, Zhao J, Huang B, Zhang Y, Wang L. Changes in cortical thickness in patients with early Parkinson’s disease at different Hoehn and Yahr stages. Front Hum Neurosci 2018; 12: 469.
15.
Gibb WR, Lees AJ. The relevance of the Lewy body to the pathogenesis of idiopathic Parkinson’s disease. J Neurol Neurosurg Psychiatry 1988; 51: 745-752.
16.
Hamilton M. A rating scale for depression. J Neurol Neurosurg Psychiatry 1960; 23: 56-62.
17.
Hamilton M. The assessment of anxiety states by rating. Br J Med Psychol 1959; 32: 50-55.
18.
Hariz GM, Forsgren L. Activities of daily living and quality of life in persons with newly diagnosed Parkinson’s disease according to subtype of disease, and in comparison to healthy controls. Acta Neurol Scand 2011; 123: 20-27.
19.
Hughes AJ, Daniel SE, Kilford L, Lees AJ. Accuracy of clinical diagnosis of idiopathic Parkinson’s disease: a clinico-pathological study of 100 cases. J Neurol Neurosurg Psychiatry 1992; 55: 181-184.
20.
Jankovic J, Kapadia AS. Functional decline in Parkinson disease. Arch Neurol 2001; 58: 1611-1615.
21.
Jankovic J. Parkinson’s disease: clinical features and diagnosis. J Neurol Neurosurg Psychiatry 2008; 79: 368-376.
22.
Kostić VS, Agosta F, Petrović I, Galantucci S, Spica V, Jecmenica-Lukic M, Filippi M. Regional patterns of brain tissue loss associated with depression in Parkinson disease. Neurology 2010; 75: 857-863.
23.
Krupp LB, LaRocca NG, Muir-Nash J, Steinberg AD. The fatigue severity scale. Application to patients with multiple sclerosis and systemic lupus erythematosus. Arch Neurol 1989; 46: 1121-1123.
24.
Laatu S, Karrasch M, Martikainen K, Marttila R. Apathy is associated with activities of daily living ability in Parkinson’s disease. Dement Geriatr Cogn Disord 2013; 35: 249-255.
25.
Lawton MP, Brody EM. Assessment of older people: self-maintaining and instrumental activities of daily living. Gerontologist 1969; 9: 179-186.
26.
Lee SY, Kim SK, Cheon SM, Seo JW, Kim MA, Kim JW. Activities of daily living questionnaire from patients’ perspectives in Parkinson’s disease: a cross-sectional study. BMC Neurol 2016; 16: 73.
27.
Mak E, Zhou J, Tan LC, Au WL, Sitoh YY, Kandiah N. Cognitive deficits in mild Parkinson’s disease are associated with distinct areas of grey matter atrophy. J Neurol Neurosurg Psychiatry 2014; 85: 576-580.
28.
Nasreddine ZS, Phillips NA, Bédirian V, Charbonneau S, Whitehead V, Collin I, Cummings JL, Chertkow H. The Montreal Cognitive Assessment, MoCA: a brief screening tool for mild cognitive impairment. J Am Geriatr Soc 2005; 53: 695-699.
29.
Parkinson J. An essay on the shaking palsy. 1817. J Neuropsychiatry Clin Neurosci 2002; 14: 223-236.
30.
Rossor MN, Fox NC, Freeborough PA, Roques PK. Slowing the progression of Alzheimer disease: monitoring progression. Alzheimer Dis Assoc Disord 1997; 11: S6-S9.
31.
Scheltens P, Leys D, Barkhof F, Huglo D, Weinstein HC, Vermersch P, Kuiper M, Steinling M, Wolters EC, Valk J. Atrophy of medial temporal lobes on MRI in “probable” Alzheimer’s disease and normal ageing: diagnostic value and neuropsychological correlates. J Neurol Neurosurg Psychiatry 1992; 55: 967-972.
32.
Schrag A, Jahanshahi M, Quinn N. How does Parkinson’s disease affect quality of life? A comparison with quality of life in the general population. Mov Disord 2000; 15: 1112-1118.
33.
Shulman LM, Gruber-Baldini AL, Anderson KE, Vaughan CG, Reich SG, Fishman PS, Weiner WJ. The evolution of disability in Parkinson disease. Mov Disord 2008; 23: 790-796.
34.
Tullberg M, Fletcher E, DeCarli C, Mungas D, Reed BR, Harvey DJ, Weiner MW, Chui HC, Jagust WJ. White matter lesions impair frontal lobe function regardless of their location. Neurology 2004; 63: 246-253.
35.
Van Uem JMT, Cerff B, Kampmeyer M, Prinzen J, Zuidema M, Hobert MA, Gräber S, Berg D, Maetzler W, Liepelt-Scarfone I. The association between objectively measured physical activity, depression, cognition, and health-related quality of life in Parkinson’s disease. Parkinsonism Relat Disord 2018; 48: 74-81.
36.
Visser M, van Rooden SM, Verbaan D, Marinus J, Stiggelbout AM,
37.
van Hilten JJ. A comprehensive model of health-related quality of life in Parkinson’s disease. J Neurol 2008; 255: 1580-1587.