Which study design is best for rare diseases?, Cohort, Cross-sectional, Case-control, Clinical trial, Which study measures prevalence, cohort, cross sectional, RCT, case control, Which study follows subjects over time?, . Ecological, crosssectional, cohort, case series, IMR stands for:, Infant Morbidity Rate, International Mortality Rate, Infant Mortality Rate, Infant Maternal Ratio, Which study starts with disease status (cases controls)?, cohort, case control, ecological, cross sectional

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