1. Department of Epidemiology, Brown University, Providence, Rhode Island, USA
2. Department of Biostatistics, Brown University, Providence, Rhode Island, USA
3. Division of Epidemiology, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
4. National Center for Environmental Health, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
5. Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
6. British Columbia Children’s Hospital, Faculty of Health Sciences, Simon Fraser University, Vancouver, British Columbia, Canada