According to CAP:

Misleading use of survey data has no place in professional public health practice

The full effect of using electronic cigarettes on people’s health has yet to be established as e-cigs are a relatively new device and long term effect studies simply do not yet exist. Though there is only limited research at this time, the studies that do exist primarily seem to agree that the electronic method of delivering tobacco to your system is significantly safer than the traditional method of combustible smoking, which exposes the user to noxious smoke and tar. The AHA policy statement read: “To date, relatively little research has been conducted on the human health effects of e-cigarettes.” They go on to cite a study by the American Journal of Preventative Medicine, in which they found that, “no serious adverse effects have been reported in clinical trials with less than 6 months of use compared with nicotine patches.” Users who are trying to quit smoking and using nicotine replacement often report having more success with e-cigarettes as a cessation method for a variety of reasons. Not only do vapor cigarettes deliver the nicotine in a safer way, they also allow the user to have an enjoyable experience, one that is similar to traditional smoking, which many smokers agree is often just as much of a part of their addiction as the nicotine itself.

Contrary to the assertion of the authors of this paper, simply being aware that the information one provides to Facebook may be used for research purposes does not constitute informed consent. The fact that users agreed to a Data Use Policy which notes that information may be used for research purposes does not, as the authors state, "[constitute] informed consent for this research."

By Stan's logic, we should throw out all the clinical trials upon which the established effectiveness of NRT is based because every one of these trials was designed to assess the efficacy of NRT among smokers who used these drugs with the specific intent to quit. Instead, according to Glantz's logic, we should examine the rate of smoking cessation among everyone who has ever used an NRT product. Doing that would lead to the conclusion that NRT is completely ineffective for smoking cessation.

LAST：smok dual coil cartomizer disposable colored cartomizer |NEXT：Bluetooth vshare,original kingway vshare bluetooth e cigarette electronic cigarette 510 cartomizer