Hans Alfred Nieper

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.