If you read the linked Al Jazeera article, it has more information: > The 71 cases in question all occurred between 1980 and 2015, an important cut-off date as

If you read the linked Al Jazeera article, it has more information: > The 71 cases in question all occurred between 1980 and 2015, an important cut-off date as it was also the year China officially banned organ harvesting from condemned prisoners. Before then, most organ transplants in China were believed to have come from executed convicts because voluntary organ donation was extremely limited.