Dr. X has tried running his literature search on a few databases, and needs to take a moment to evaluate his progress so far. Remember, he is studying the effect of caloric intake on the development of brain tumors in mice. Below are some of the results of Dr. X's search. How can Dr. X narrow or broaden his search, if necessary?
Select the most correct option by clicking the radio button beside it. Each time you answer a question you will get immediate feedback.
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