According to Dr. Bernard Greenberg, head of the Department of Biostatistics of the University of North Carolina School of Public Health:
Stop lying right there. Where is this supposed claim of his? When did he make it, and what exactly did he say, and how do you know? I am telling you he never said any such thing. If he said it he would have been lying, but there’s no evidence that he ever said it in the first place. The entire testimony appears to have been made up.