多多并没给出任何数据，不觉得可信。你可以看看当时的报纸如何说

http://archives.chicagotribune.com/1979/10/19/page/62/article/chad-a-boy-who-died-of-cancer-and-promises


“Treated consistently with the best of scientific medicine, Chad had at least a 50-50 chance of living a full life. Those who contributed to cutting those chances have much to answer for .”