A good Op-Ed piece from the New York Times, calling for "interim safety guidelines" for vaping products.
Will the F.D.A. Kill Off E-Cigs?
"The [FDA] should start by focusing on a few basic steps. It should outline basic good-manufacturing practices... and require manufacturers to ensure that all batches of chemicals are traceable and that all sources of hardware are known..."
And, an interesting article on the recent debate over formaldehyde present in vapor:
Verified: Formaldehyde levels found in the NEJM study associated with dry puff conditions...
"...It is very important to identify which atomizer was used and what energy levels (watts) were applied to the atomizer in order to understand whether the findings were associated with overheating..."