%0 Journal Article %T Author's response to Poole, C. Commentary: How Many Are Affected? A Real Limit of Epidemiology %A Gatto Nicolle M %A Campbell Ulka B %A Schwartz Sharon %J Epidemiologic Perspectives and Innovations %D 2010 %I %R 10.1186/1742-5573-7-7 %U http://www.epi-perspectives.com/content/7/1/7