Google these people and you should turn up some good stuff.
Dr. Lester Grinspoon -Associate Professor Emeritus of Psychiatry at Harvard Medical School.[1] Grinspoon was senior psychiatrist at the Massachusetts Mental Health Center in Boston for 40 years.[2] Dr. Grinspoon is a fellow of the American Association for the Advancement of Science and the American Psychiatric Association.[2] He was founding editor of the Annual Review of Psychiatry and the Harvard Mental Health Letter.[2] Grinspoon was editor of the Harvard Mental Health Letter for fifteen years. <-- Huge MJ Advocate
Dr. Melanie Dreher Phd - Dr. that did the only known study of MJ and pregancy