title: The Authors Respond.
authors.affiliation: Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, jgarn@emory.edu Department of Biostatistics, University of Florida, Gainesville, FL Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA.
authors.forename: Joshua V
authors.initials: JV
authors.lastname: Garn
authors.forename: Babette A
authors.initials: BA
authors.lastname: Brumback
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Freeman