. >> doctor erin is a medical ethicist at u.c. irvine, and staunch opponent to assisted suicide. proponents say there are safeguards in place. it's not misused. >> we know in oregon, 6% of patients dying of assisted suicide ever were referred to psychiatric assessment. only 13% had palliative care referral to have a conversation with an expert on end of life before getting a prescription for the deadly drug. >> reporter: oregon's public health division said the concerns have not become a reality. oregon was the first state to pass a death with dignity law. that was back in 1997. since then 850 people ended their lives. mostly cancer patients with good medical care, like walner. >> i don't know any terminal patient that wants to die. i think we don't want to drag our death out. we are going to die. if it comes to that point where there's no more that i can do, my body is failing, organs are shutting down, all that is left is die. and it can be slow and painful or under my terms. >>> this man, who is influenced by his catholic faith, warps of a slippery slope. >> if this is a benef