Reply: Quantitative evaluation of the drawing of a spiral on a paper


  • Relevent conflict of interest: Nothing to report. Peter H. Kraus was funded by Boehringer Ingelheim Pharma GmbH and Co KG, Ingelheim am Rhein, Germany. The study was supported in part by the Competence Network on Parkinson's Disease (German Ministry for Education and Research, 01GI0401). Peter H. Kraus Arndt Hoffmann has a patent pending on the graphimetry technique.

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