About Gabrielle Weiss Gabrielle Weiss, M.D.C.M., is a professor of psychiatry and a staff psychiatrist at the Children's and Women's Health Centre in British Columbia. Books by Gabrielle Weiss ADHD in Adulthood A Guide to Current Theory, Diagnosis, and Treatment by (author) Margaret Weiss, Lily Trokenberg Hechtman & Gabrielle Weiss