A Chinese official has suggested China may still be using organs farmed from the bodies of executed prisoners. Huang Jiefu, director of Beijing's transplant program, said at a Vatican summit on the topic that organ collection could still be taking place, despite China declaring zero tolerance for the practice at the end of 2014. At the summit held to discuss the practice of organ trafficking, Huang Jiefu told the assembled crowd - which included 80 doctors and NGO representatives - that China was trying to improve on its history of taking organs from those on death row. His attendance at the Organ Transplant and Transplant Tourism Summit was criticized by some attendees, who said that China's presence reduced the legitimacy of the conference. The BBC reported that the Doctors Against Forced Harvesting described China's involvement as "compromising." Reports in the early 2000s suggested organs were frequently harvested from executed prisoners. Reports last year suggested the practice may have continued. The spiritual group Falun Gong, which was outlawed in China in 1999, is one of the most outspoken groups against organ harvesting. Members of the group, and supportive Western politicians, have suggested that waiting times for organ transplantation in China are so short due to the harvesting from prisoners. A 2008 paper ... co-authored by Jiefu published in The Lancet, suggested that more than half of organ transplants in China came from death row prisoners.