About John Dewan John G. Dewan was a professor of psychiatry at the University of Toronto and Director of the Out-Patient Department, Toronto Psychiatric Hospital. He was formerly a Beit Memorial Research Fellow at the University of Cambridge. Books by John Dewan The Organic Psychoses A Guide to Diagnosis by (author) John Dewan & William Spaulding The Organic Psychoses A Guide to Diagnosis by (author) John Dewan & William Spaulding
