title: In Reply.
authors.affiliation: University of Utah Health Sciences Center, Department of Family and Preventive Medicine, Division of Public Health, Salt Lake City, Utah Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland.
authors.forename: Karen C
authors.initials: KC
authors.lastname: Schliep
authors.forename: Sunni L
authors.initials: SL
authors.lastname: Mumford
authors.forename: Lindsey A
authors.initials: LA
authors.lastname: Sjaarda
authors.forename: Enrique F
authors.initials: EF
authors.lastname: Schisterman