Alan Moore got his start writing Doctor Who strips in Doctor Who magazine. His strips were mainly focused on Doctor Who's monsters and not on the Doctor himself (Although his WATCHMEN illustrator, Dave Gibbons, drew the Doctory strips with other writers)
Said strips were reprinted without his permission in the Marvel USA reprint series of Doctor Who, which you might remember had a limited run in the 80's. Hence, Alan Moore refused to never work for Marvel again, and now we have DC-produced classics like WATCHMEN, KILLING JOKE, WHATEVER HAPPENED TO THE MAN OF TOMMOROW, etc....
Said strips were reprinted without his permission in the Marvel USA reprint series of Doctor Who, which you might remember had a limited run in the 80's. Hence, Alan Moore refused to never work for Marvel again, and now we have DC-produced classics like WATCHMEN, KILLING JOKE, WHATEVER HAPPENED TO THE MAN OF TOMMOROW, etc....