title: The Authors Respond.
authors.affiliation: Robert Wood Johnson Foundation Health and Society Scholars Program UC San Francisco and UC Berkeley San Francisco, CA Departments of Environmental Health Sciences and Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore, MD Department of Medicine Johns Hopkins School of Medicine Baltimore, MD Center for Health Research Geisinger Health System Danville, PA bschwar1@jhu.edu.
authors.forename: Joan A
authors.initials: JA
authors.lastname: Casey
authors.forename: Brian S
authors.initials: BS
authors.lastname: Schwartz