Generally, when the federal government wants to make sure a study it funds will kill all of the patients, in order to make some natural substance look ineffective, they will use multiple techniques. For example, when doing a study of laetrile they created a totally bogus "laetrile pill" and laced it with inorganic cyanide, as just mentioned. But that was not enough. They also did not give the patients the standard cancer diet used by alternative practitioners in a complete laetrile treatment. This was easy to see because this cancer diet, by itself, even without laetrile, would have produced a survival rate significantly higher than orthodox medicine.