Bilingualism delays age at onset of dementia, independent of education and immigration statusAuthor Response

Editors' Note: Mortimer argues that important confounding variables may have biased the conclusion by Alladi et al. on the role of bilingualism in delaying the onset of dementia. Following Mortimer's comments, Alladi et al. conducted additional analysis of their data to support their conclusion. The attitude of “close enough” is not appropriate when determining brain death. Stadlan comments and supports Frank's call for action regarding this sensitive issue. —Chafic Karam, MD, and Robert C. Griggs, MD From their study of 648 patients with dementia in a clinic in India, Alladi et al. concluded that bilingualism leads to a delay in onset age of …