Slowing of number naming speed by King-Devick test in Parkinson's disease.
Parkinsonism Relat Disord. 2014 Feb;20(2):226-9. doi: 10.1016/j.parkreldis.2013.10.009. Epub 2013 Oct 18.
Parkinsonism Relat Disord. 2014.
PMID: 24269283
Free PMC article.