title: Response to Werler and Parker letter: Comment on live-birth bias in pregnancy cohorts.
authors.affiliation: Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA, zeyanliew@ucla.edu.
authors.forename: Zeyan
authors.initials: Z
authors.lastname: Liew
authors.affiliation: Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark.
authors.forename: Jørn
authors.initials: J
authors.lastname: Olsen
authors.affiliation: Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA.
authors.forename: Xin
authors.initials: X
authors.lastname: Cui
authors.affiliation: Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA, Department of Neurology, Geffen School of Medicine, University of California, Los Angeles, CA, USA.
authors.forename: Beate
authors.initials: B
authors.lastname: Ritz
authors.affiliation: Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA.
authors.forename: Onyebuchi A
authors.initials: OA
authors.lastname: Arah
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000453:epidemiology*; D004785:Environmental Pollutants / Q000633:toxicity*; D005260:Female; D005466:Fluorocarbons / Q000633:toxicity*; D006801:Humans; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D011297:Prenatal Exposure Delayed Effects / Q000453:epidemiology*
chemical_list: D004785:Environmental Pollutants; D005466:Fluorocarbons