title: Response to a letter to the Editor by Dr. David Egilman and Mr. John Schilling regarding the article by Donovan et al. (2011).
authors.affiliation: a ChemRisk, San Francisco, CA.
authors.forename: Ellen
authors.initials: E
authors.lastname: Donovan
authors.affiliation: b ChemRisk, Boulder, CO.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Sahmel
authors.affiliation: c ChemRisk, Pittsburgh, PA.
authors.forename: Paul
authors.initials: P
authors.lastname: Scott
authors.affiliation: a ChemRisk, San Francisco, CA.
authors.forename: Dennis
authors.initials: D
authors.lastname: Paustenbach