title: Author's response to Poole, C. Commentary: How Many Are Affected? A Real Limit of Epidemiology.
authors.affiliation: Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY 10032 USA. nicolle.gatto@pfizer.com.
authors.forename: Nicolle M
authors.initials: NM
authors.lastname: Gatto
authors.forename: Ulka B
authors.initials: UB
authors.lastname: Campbell
authors.forename: Sharon
authors.initials: S
authors.lastname: Schwartz
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