Look for English language articles published in 1998 about cataracts in the elderly (HINT: make sure you search your main terms as MeSH terms).

Open up PubMed in a second window by clicking on the icon below. Use the Preview/Index, Limits, and History to find articles on this topic. Note the number of citations your search retrieved and then come back to the first window and answer the question.

Which number below most closely matches the results you got? (This number will not be exact as more citations are added to PubMed.)

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