Only one type of mask helps "Facemasks are the least useful measure, as a public health response," said Fay Johnston from the University of Tasmania's Menzies Institute for Medical Research
Urban transport in India: Issues, challenges, and the way forward
Lee HW, Wang HT, Weng MW, Chin C, Huang W, Lepor H et al (2015) Cigarette side-stream smoke lung and bladder carcinogenesis: inducing mutagenic acrolein-DNA adducts, inhibiting DNA repair and enhancing anchorage-independent-growth cell transformation
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The most recent article on the topic by Abouk and Adams (2017) concluded that e-cigarette sales restrictions were associated with reduced adolescent smoking through 2014, while two earlier articles by Friedman (2015) and Pesko and colleagues (2016) came to the opposite conclusion, that e-cigarette sales restrictions were associated with higher levels of adolescent smoking through 2013