Jane St. Clair has written an article describing the basic points with which the Nazis promoted their program of euthanasia, and the ensuing horrors that came afterwards. From "compassionate" killing to horrific gas chambers.
Her fascinating book, Walk Me To Midnight, has recently been published.
"Walk Me to Midnight is a novel of the hottest new genre: a blend of social controversy and spirituality within suspense. It is the only novel of its kind - the only one that takes a stand against physician-assisted suicide. You find plenty of titles on the other side - but this is the only one that makes you think no matter which side you’re on right now."