Home›Articles›The Colchester Survey and a chair that outgrew its nameArticleThe Colchester Survey and a chair that outgrew its nameArticlesConnectionsSourcesComments (0)Reader Challenges (0)ConnectionsArticle OnLionel Penrose, Healers Well-attested SourcesLionel Penrose (Wikipedia)CareerQuote, Careerwas the earliest serious attempt to study the genetics of intellectual disabilityView the SourceMedicine Atlas Original Articlestier 1Comments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.