is smoking 2 cigarettes a day bad How Many Do You Need to Smoke to Get Cancer? Many people think smoking only

Open Your Vents If youve ever been concerned about heating costs, youve probably closed some of the heating vents in your home

Bronchiolitis obliterans can also occur without a specific exposure in people who've had a lung transplant

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For less statistically minded readers, latent class analysis is a sophisticated data reduction technique, which assumes that the population contains two or more sub-types (classes) and uses the data to classify people empirically into different classes on the basis of a set of variables (in this case, smoking status at each time point)

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