Organ harvesting from Falun Gong practitioners in China must be taken from a living donor (kidneys must be transplanted within 24–48 hours; livers within 12 hours, and hearts within 8 hours). Kirk C. Allison, Associate Director of the Program in Human Rights and Medicine at the University of Minnesota, wrote that the "short time frame of an on-demand system [as in China] requires a large pool of donors pre-typed for blood group and HLA matching," which is consistent with reports of Falun Gong prisoners having blood and tissue tested in custody. He wrote that China's short organ wait times could not be assured on a “random death” basis,
Water organ aspiration (using the Bernoulli effect) into the main pipe from a side-pipe holding its top above the water source. Both water and air arrive together in the camera aeolis (wind chamber). Here, water and air separate and the compressed air is driven into a wind-trunk on top of the camera aeolis, to blow the organ pipes. Two perforated ‘splash plates’ or ‘diaphragms’ prevent water spray from getting into the organ pipes. The water, having been separated from the air, leaves the camera aeolis at the same rate as it enters. It then drives a water wheel, which in turn drives