A man smokes next to a "No Smoking" sign in Shanghai. China is the largest consumer of tobacco. Photo: Reuters A man smokes next to a "No Smoking" sign in Shanghai. China is the largest consumer of tobacco. Photo: Reuters
A man smokes next to a "No Smoking" sign in Shanghai. China is the largest consumer of tobacco. Photo: Reuters

Menthol cigarettes may be harder to quit, raising regulation questions

A man smokes next to a "No Smoking" sign in Shanghai. China is the largest consumer of tobacco. Photo: Reuters A man smokes next to a "No Smoking" sign in Shanghai. China is the largest consumer of tobacco. Photo: Reuters
A man smokes next to a "No Smoking" sign in Shanghai. China is the largest consumer of tobacco. Photo: Reuters
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