- Cystic echinococcosis in the Xinjiang/Uygur Autonomous Region, People's Republic of China. II. Comparison of three levels of a local preventive and control program. Andersen, F.L., Tolley, H.D., Schantz, P.M., Chi, P., Liu, F., Ding, Z. Trop. Med. Parasitol. (1991)