British Medical Journal report on Greek study:
Conflicting research on e-cigarettes | Stuff.co.nz
Conflicting research on e-cigarettes | Stuff.co.nz
Flouris and Oikonomou said that while "alternative smoking strategies are always welcome in an effort to reduce the threat to public health" caused by tobacco, safety was also vital.
"More rigorous chemical analyses are needed, followed by extensive research involving animal studies and, finally, clinical trials in humans," they wrote.