aising increasing concerns that China's often heavy-handed censorship policies will be reflected in the content of Hollywood movies, reported on Sunday that Paramount execs asked the producers of World War Z to remove a reference to China in a scene in which the characters discuss the possible origins of a zombie pandemic that is causing worldwide chaos. According to the website, the studio advised the movie producers to drop the reference to China and cite a different country as a possible source of the pandemic. The report comes following reports that Skyfall was heavily altered to satisfy Chinese censors' objections before it was shown in that country -- now the No. 2 market for movies behind the U.S. Men In Black 3, Pirates Of The Caribbean: At World's End and Mission: Impossible 3 were also altered for Chinese consumption. But The Changes to World War Z would appear to revise the content of the film not only in China but also in the rest of the world, including the U.S. While some analysts have argued that increased competition from U.S. films may encourage Chinese censors to relax their policies, only this weekend it was disclosed that a retrospective of Andy Warhol's work, which has begun a two-year Asia tour, will omit Warhol's portraits of Mao Tse-tung. The state-run newspaper Global Times protested in February that one of the portraits suggested that Mao wore lipstick and was therefore disrespectful. In a statement to the Wall Street Journal Eric Shiner, director of the Andy Warhol Museum in Pittsburgh, which has organized the Asian tour, voice no criticism of the Chinese action, saying only, We understand that certain imagery is still not able to be shown in China and we respect our host institutions' decisions.