Before revision: References External links David Pearce's homepage Beyond Therapy: Biotechnology and the Pursuit of Happiness (The President's Council on Bioethics, Washington, D.C., October 2003).
After revision: References External links The Biohappiness Revolution (video) Beyond Therapy: Biotechnology and the Pursuit of Happiness (The President's Council on Bioethics, Washington, D.C., October 2003).