1. Child & Family Research Institute, BC Children’s Hospital, Vancouver, British Columbia, Canada
2. Department of Environmental Health, Harvard University, Boston, Massachusetts, USA
3. Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
4. National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
5. Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
6. Simon Fraser University, Vancouver, British Columbia, Canada