The Relationship of Bilingualism Compared to Monolingualism to the Risk of Cognitive Decline or Dementia: A Systematic Review and Meta-Analysis. Mukadam N, Sommerlad A, Livingston G J Alzheimers Dis. 2017; 58(1):45-54. PMID: 28387680. Abstract Comment Bookmark Recommend Follow Comment | Bookmark | Recommend | Follow