here's the link to a paper from the American Association of Public Health Physicians (AAPHP)
http://www.aaphp.org/special/joelstobac/ecigcontext.pdf
that could be added to the list of PDFs in the ECF library
http://www.aaphp.org/special/joelstobac/ecigcontext.pdf
that could be added to the list of PDFs in the ECF library