 The United States Senate Committee on Foreign Relations convened a hearing in 1995 on the trade in human body parts in China; receiving evidence from various sources including statements from Amnesty International, the BBC, and Chinese government documents produced by human rights activist Harry Wu.The World Medical Association, the Korean Medical Association, and the Chinese Medical Association reached an agreement in 1998 that these practices were undesirable and that they would jointly investigate them with a view to stopping them; however, in 2000, the Chinese withdrew their cooperation.Amnesty International claimed to have strong evidence that the police, courts and hospitals were complicit in the organ trade, facilitated by the use of mobile execution chambers, or "death vans".