The (Laetrile) efficacy tests...clinically in humans..(by) the US NCI...were obviously conducted so that a negative result could be formulated. The limited number and types of human cancer cases selected...the omission of necessary additional measures ('e.g dietary'), the far too short observation periods, and the undefined chemical properties of the (Laetrile)... all contributed to devaluation of...conclusions.
Hans Alfred NieperThe oral (Laetrile) had been 'toxified' by adding cyano-urea in the NCI...(NCI's) Mayo (Clinic) dismissed well responding patients to discard them from statistical evaluation...This kind of fraud which I expressed...and which was openly published...has...not resulted in any denial.
Hans Alfred Nieper