Erich Loewy, MD, Professor at the University of California at Davis, wrote in the 1998 essay "Harming, Healing and Euthanasia," that appeared in his book Regulating How We Die:

“I will argue that the time has come for us as a society to consider legitimizing active voluntary euthanasia when it meets the following conditions…it must be under circumstances in which the death of the individual is reasonably felt to be inevitable, shortly at hand, and, above all, in which the time until death is filled with relentless suffering.”