title: Reply.
authors.affiliation: Baylor College of Medicine, Houston, Texas.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Shulman
authors.affiliation: Baylor College of Medicine, Houston, Texas.
authors.forename: Emily B
authors.initials: EB
authors.lastname: Hollister
authors.affiliation: University of Washington, Seattle, Washington.
authors.forename: Kevin
authors.initials: K
authors.lastname: Cain
authors.affiliation: University of Washington, Seattle, Washington.
authors.forename: Margaret
authors.initials: M
authors.lastname: Heitkemper