Doonesbury by Garry Trudeau for April 15, 1989
Doctor: I'm afraid I can't really give you a prognosis, Joanie. Andy's suffering from a host of infections, and it's ward to predict when and what he will ultimately die of. You can't believe how little we really know about AIDS. We still don't even know how long the latency period is. It could be as much as 15 years! Back-dating? Joanie: Um...doesn't everyone?