the effects of chewing tobacco How Use Affects Oral Health Health effects associated with chewing

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He said he chewed leaf tobacco until about five years ago

We wrote this song together

To account for the stratified multi-stage cluster sample, we considered the provincial domain as the strata variable and accounted for clustering by village/urban unit, enumeration area, and mother, by computing variances around means, proportions, and regression coefficients using a Taylor linearized variance approach that used a variance inflation factor to account for within-cluster homogeneity 22