Which of the following is a type of observational study that analyzes population-level data?
AEcological study
BCase-control study
CRandomized controlled trial
DLongitudinal study
Which of the following is not a criterion suggesting causality in non communicable diseases?
ASpecificity of association
BDose response relationship
CStrength of association
DLack of temporal association
Leading questions are permitted only in-
ARe-examination
BExamination in chief
CDying declaration
DCross examination
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