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GEE fits marginal generalised linear models by focusing on models for the mean of the correlated observations within clusters (without fully specifying the joint distribution of the observations) and is particularly suited to analysing clustered data, such as longitudinal data and repeated measures [60]

Professor Hancox says there is still a lot to learn about cannabis, but there is sufficient evidence to show that smoking cannabis is not harmless to the lungs

It is likely that there is a complex interaction of many external and internal factors that play a role in the development of oral cancer

MAY 31 - WORLD NO TOBACCO DAY - Which part of Canada has the most smokers

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