Hecht and/or Hatsukami presented some of those same slides at FDA's recent workshop.
Please note that Hecht and Hatsukami have received tens of millions of dollars from DHHS during the past 25 years to conduct research on smokeless tobacco products, and to then manipulate and misrepresent their findings to confuse and scare the public to believe that smokeless tobacco products are as hazardous as cigarettes, and to lobby for FDA regulations to mandate sharp reductions in various smokeless tobacco constituents (even though smokeless tobacco is 99% less hazardous than cigarettes, and there is no evidence that smokeless tobacco constituents increase disease risks).
Had this study been published in a journal, its title (and the title of its press release) would have been something like
"E-cigarettes found to contain carcinogens and toxins"
and would have contained quotes by Hecht or Hatsukami saying something like
"While our study found that e-cigarettes may be less hazardous than cigarettes, we need to conduct far more research before conclusions can be made. Until then, we need FDA regulation of these potentially addictive and hazardous products to protect children."