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tobacco laws pa Pennsylvania moves to raise cigarettes, age to 21 PENNSYLVANIA SMOKING: Pa. Senate, House
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Canada and the USA: 20s and 25s are both common

In the late 1990s, South Africa banned all tobacco advertising
Oxidative stress contributes to renovascular hypertension

The forecast model regression estimates using the updated data are neither statistically nor practically different from the published ECTCP estimates

He Z, Shao T, Li H, Xie Z, Wen C
Furthermore, in contrast to previous studies [13, 27], we did not detect a significant association between maternal cigarette smoking during pregnancy and cyanotic congenital heart disease