Dark Wing (1979), de Katherine MacLean e Carl West, eu acho. / p>
Extraído de uma revisão da GoodReads :
...the real underlying (and somewhat dubious, but go with it) premise for this world is that doctors are now illegal. The generally held philosophy is that people get sick because they subconsciously don't want to stay in the world; this gets extended even to accidents. It's all mentally based, and if you resort to medicine or surgery or some artificial means of restoring your health, instead of doing it through your own willpower, you're sneered upon. If you help someone else, you've just committed a crime.
Travis knows all this, but when he stumbles across an ancient, abandoned ambulance, he can't resist inhaling all the forbidden knowledge it contains. Soon he's unwittingly diagnosing people from visible symptoms, and this naturally leads into doctoring them -- because some people secretly are willing to pay for illegal help. Add in his friendship with an off-world boy who has run afoul of corporate machinations to take advantage of his ambassador parents' deaths, and Travis finds himself in heaps of trouble.