title: IBALD-MULLI AND PETERS RESPOND.
authors.affiliation: Angela Ibald-Mulli and Annette Peters are with the National Research Center for Environment and Health, Institute of Epidemiology, and the Department of Epidemiology, Ludwig Maximilian University Munich, Neuherberg, Germany.
authors.forename: Angela
authors.initials: A
authors.lastname: Ibald-Mulli
authors.forename: Annette
authors.initials: A
authors.lastname: Peters