Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Study Raises Concern Over Safety of Pfizer Painkiller Celebrex Pfizer Inc. said today that it had found an increased risk of heart troubles in some people taking higher dosages of Celebrex, its popular arthritis and pain relief drug.

Business