doctors promote cigarettes More Smoke Camels Doctors, Nurses and Smoking: Smoking
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Along the same lines, Boucher et al

Often too small to be seen by the naked eye, PM can be made of a wide range of solids and liquids, including metals, organic compounds, biological material, carbon, sulfates, nitrates, and other minerals
Consider torch lighters that offer precision and durability, like those featuring triple or even quadruple jets

Aust N Z J Psychiatry 2007;41(7):572580

The ill effects of these design changes are compacted by efforts to make cigarettes more attractive and more addictive