On 2016 Aug 18, Peter Hajek commented:

Cigarette smoke killed the cells within 24 hours, e-cig vapour damaged them after extended exposure over up to 8 weeks. The abstract ignores this. The authors of this study are Yu et al., the authors listed above are not responsible for this paper, they in fact published a critique explaining the problems in it and in the accompanying media release - see below.

On 2016 May 19, Clive Bates commented:

For clarity, it is important to point out that the abstract above is drawn from a different paper Yu V, 2016. It is not the abstract for this PubMed entry.

This PubMed entry actually refers to a highly critical commentary on the Yu V, 2016 paper and the abstract shown above. Please use the full-text link at the top right of this page or access the commentary here:

Holliday R, Kist R, Bauld L. Commentary on Yu et al, Evidence-Based Dentistry (2016) 17, 2–3. doi:10.1038/sj.ebd.6401143

On 2016 May 19, Clive Bates commented:

For clarity, it is important to point out that the abstract above is drawn from a different paper Yu V, 2016. It is not the abstract for this PubMed entry.

This PubMed entry actually refers to a highly critical commentary on the Yu V, 2016 paper and the abstract shown above. Please use the full-text link at the top right of this page or access the commentary here:

Holliday R, Kist R, Bauld L. Commentary on Yu et al, Evidence-Based Dentistry (2016) 17, 2–3. doi:10.1038/sj.ebd.6401143

On 2016 Aug 18, Peter Hajek commented:

Cigarette smoke killed the cells within 24 hours, e-cig vapour damaged them after extended exposure over up to 8 weeks. The abstract ignores this. The authors of this study are Yu et al., the authors listed above are not responsible for this paper, they in fact published a critique explaining the problems in it and in the accompanying media release - see below.