Link to the paper mentioned at the beginning of this article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3945755/#idm140...
Said paper is from 2013, 6 year without being confirmed or with being repressed?
https://scholar.google.com/scholar?cluster=61493914670281996... https://scholar.google.com/scholar?um=1&ie=UTF-8&lr&cites=61...
Probably just gone unnoticed, ignored or suppressed by mainstream media.
Edit: am I being downvoted by the same people who think voter suppression isn't a thing or pointing out China's mass incarceration of Uyghurs is propaganda? What in the fuck, Hacker News. I expected more from you people.