Two high quality meta-analyses showed no excess mortality, although one smaller cohort study contradicted this finding
83.3% of the participants in the sun-cured tobacco group had less than 9 years of education, which was higher than that in the cigarette-smoking group (27.2%) and the non-smoking group (41.1%)
Seven (44%) dual users reported positive health effects associated with e-cigarette use, including less coughing compared to tobacco cigarettes (n=4), better breathing and lung capacity (n=3), less throat soreness (n=3), and helps with relaxing (n=1)
Ma H, Lu L, Xia H, Xiang Q, Sun J, Xue J
Aftermarket parts, especially universal ones, will almost always have positive (+) and negative (-) terminals marked