Sissela Bok, PhD, Fellow at the Harvard Center for Population and Development Studies, wrote in the 1998 book Euthanasia and Physician-Assisted Suicide: For and Against, that:

“Both sides can point, furthermore, to much recent survey evidence, to the effect that physicians, nurses, and other health professionals are already putting patients to death. Some do so surreptitiously; others do so in secret, only to acknowledge having done so once the acts are completed.”