Prospective predictors examined on the activities were ages, intercourse, birth cohort and you may region of quarters
Prospective predictors examined on the activities were ages, intercourse, birth cohort and you may region of quarters Data available on the children in the study were limited to demographic information, vaccination history and hospitalization data; only age, sex and region of residence could be included as covariates in the analyses. Age was considered a time-varying […]
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