Many opponents argue that it is medically wrong and backwards. In places where assisted dying is legal, doctors can choose whether or not to participate in programs and provide life-ending drugs. Some doctors refuse to do so, such as Dr. Kenneth Stevens, an opponent of assisted dying. He talks about his reasons for taking a stand as a doctor towards a cancer patient who requested assisted dying, saying: “I didn't go into medicine to kill people. When a doctor writes a prescription, the prescription is a written order. If he is writing a prescription for lethal drugs, he is writing a prescription to kill that person.” (Stevens, ref. Daily Signal, 2) This is a concern shared by many doctors and opponents. Some cite the Hippocratic Oath, a traditional code used by doctors, which includes this passage in its updated modern version: “Above all I must proceed with caution in matters of life and death. If it is given to me to save a life, all thanks. But it may also be in my power to take a life; this imposing responsibility must be faced with great humility and awareness of one's own fragility. Above all, I must not play with God." (Hippocratic Oath, Ref. Tyson, 1) While this may seem quite explicit, as supporters of medically assisted dying point out, the Hippocratic Oath does not have much medical importance today, nor do all versions forbid death assisted.