Figure 5.

Interaction plot for cancers by year. The plot on the left demonstrates search activity for each of the three cancers; each point is the average search activity for a particular year. The plot on the right shows search activity by month; each point represents an average of all values for a particular month across all years.

Glynn et al. BMC Cancer 2011 11:442   doi:10.1186/1471-2407-11-442
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