I have some anecdotal evidence of that. I haven't seen any empirical evidence. It's something that's quite difficult to assess as an outside researcher. I've heard from nurses and others who are involved in the Chinese medical system in Xinjiang that they have performed these sorts of acts, removing organs as people are dying, basically. I've also met a surgeon who was involved in these things in the past and is now living in the U.K.
There is strong evidence that it's happening. We don't know the scale at which it's happening. One of the things that Uighurs are very concerned about now is that in 2017, as part of this re-education push, the state required all Uighurs to submit DNA samples at police stations, along with their blood types, finger prints, iris scans, face scans, voice signatures—all of this biometric data. They're very concerned that the DNA that's been collected will be used to match organs with people who need the organs.
There's a lot of evidence that this could be happening, but we don't have strong evidence to say that it has or is happening, or at what scale. We don't exactly know the extent of it.