Which type of observational epidemiological study is considered to be most reliable?
1 answer:
<span>i am pretty sure it is clinical trial</span>
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It would fall into social category
Where is the multiple choice answers? so i can give you the correct answer
Seek other options, use protection, abstinence.
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where is the list of "the following"?
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BC ITS EMBARRASSING, DUH
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