Original sentence: He claimed that organ harvesting from political prisoners likely began in Xinjiang province in the 1990s, and then spread nationwide, although even favorable reviews admitted his claims could not be substantiated.Torsten Trey.Two months after 3 individuals alleged thousands of Falun Gong practitioners were being killed for their organs in March 2006, Gutmann wrote a detailed article about purported organ harvesting
Edited sentence: Gutmann estimates 65,000 Falun Gong and two to four thousand Uyghurs, Tibetans or House Christians were killed for their organs from 2000 to 2008.Gutmann made other contributions to raising awareness of organ harvesting in China.He reported that organ harvesting from political prisoners likely began in Xinjiang province in the 1990s, and then spread nationwide.Investigators of Organ Harvesting in China, who  have published their investigations, include David Kilgour, David Matas and Ethan Gutmann.Three books have been published about Organ Harvesting in China.Torsten Trey, with contributions from 12 organ harvesting experts.Two months after 3 individuals alleged thousands of Falun Gong practitioners were being killed for their organs in March 2006, Gutmann wrote a detailed article about organ harvesting