Cross-cultural evaluation of the Parkinson's Disease Questionnaire: tests of data quality, score reliability, response rate, and scaling assumptions in the United States, Canada, Japan, Italy, and Spain

2003 ◽  
Vol 56 (9) ◽  
pp. 843-847 ◽  
Author(s):  
Crispin Jenkinson ◽  
Ray Fitzpatrick ◽  
Josephine Norquist ◽  
Leslie Findley ◽  
Kim Hughes
2020 ◽  
Vol 10 (9) ◽  
Author(s):  
Erin R. Smith ◽  
Paul B. Perrin ◽  
Carmen M. Tyler ◽  
Sarah K. Lageman ◽  
Teresita Villaseñor

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