Yahoo | The severe shortage of viable organs for transplantation in the U.S. has led a transplant surgeon to propose harvesting kidneys from people who are not dead yet. Dr. Paul Morrissey, an associate professor of surgery at Brown University's Alpert Medical School, wrote in The American Journal of Bioethics that the protocol known as donation after cardiac death -- meaning death as a result of irreversible damage to the cardiovascular system -- has increased the number of organs available for transplant, but has a number of limitations, including the need to wait until the heart stops.