I cannot create a summary of the article titled "Controversial CDC-Funded Hep B Study Halted" because this article is not included in the search results provided. The search results contain information about the controversial CDC-funded hepatitis B study in Guinea-Bissau that was approved and started, but does not contain information about its termination. If you would like a summary of the available information on this study, I can create one based on the resources available to me.