Here is how a public health organization should be doing things. Don't waiting for someone else to study things.
https://www.gov.uk/government/uploa...hment_data/file/311887/Ecigarettes_report.pdf
From the conclusion-
"Electronic cigarettes, and other nicotine devices, therefore offer vast potential health benefits, but maximising those benefits while minimising harms and risks to society requires appropriate regulation, careful monitoring, and risk management. However the opportunity to harness this potential into public health policy, complementing existing comprehensive tobacco control policies, should not be missed."
https://www.gov.uk/government/uploa...hment_data/file/311887/Ecigarettes_report.pdf
From the conclusion-
"Electronic cigarettes, and other nicotine devices, therefore offer vast potential health benefits, but maximising those benefits while minimising harms and risks to society requires appropriate regulation, careful monitoring, and risk management. However the opportunity to harness this potential into public health policy, complementing existing comprehensive tobacco control policies, should not be missed."