In 2019, a study called for the mass retraction of more than 400 scientific papers on organ transplantation, because of fears the organs were obtained unethically from Chinese prisoners. While the government says 10,000 transplants occur each year, a report by the Falun Gong-linked IETAC alleged that between 60,000 and 100,000 organs are transplanted each year and claimed that this gap was being made up by executed prisoners of conscience.