. 2008 Oct 16;10(4):e30. doi: 10.2196/jmir.1090
© Mark J Dobrow, Margo C Orchard, Brian Golden, Eric Holowaty, Lawrence Paszat, Adalsteinn D Brown, Terrence Sullivan. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 16.10.2008.
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Figure 2.
Estimating the denominator