It took a considerable amount of time and energy from a number of world-class scientists but happy to see that science ultimately prevails!
https://www.ahajournals.org/doi/abs/10.1161/JAHA.119.014519
https://www.ahajournals.org/doi/abs/10.1161/JAHA.119.014519
https://www.forbes.com/sites/sallysatel/2020/02/18/trumps-good-idea-get-drug-regulators-out-of-vaping/#58066bb13454
https://www.clivebates.com/vaping-tobacco-harm-reduction-nicotine-science-and-policy-q-a/