Challenges of Estimating Accurate Prevalence of Arm Weakness Early After Stroke.

"Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article."

"Funding: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research was supported by the Canadian Institutes of Health Research (FND-143340) and the Canada Research Chairs Program to JJE. KSH received support from the National Health and Medical Research Council of Australia (#1088449) and Michael Smith Foundation for Health Research (#15980). TSF was supported by the Heart and Stroke Foundation of Canada and the Michael Smith Foundation for Health Research. LAS was supported by a Canadian Institutes for Health Research Fellowship."