About the Authors

Saskia M. Willers

Affiliation Institute for Risk Assessment Sciences (IRAS), Division Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands

Bert Brunekreef

Affiliations Institute for Risk Assessment Sciences (IRAS), Division Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands, Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands

Henriëtte A. Smit

Affiliation Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands

Eline M. van der Beek

Affiliations Danone Research, Centre for Specialised Nutrition, Wageningen, The Netherlands, Danone Research, Centre for Specialised Nutrition, Singapore, Singapore

Ulrike Gehring

Affiliation Institute for Risk Assessment Sciences (IRAS), Division Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands

C. de Jongste

Affiliation Department of Pediatrics, Division of Respiratory Medicine, Erasmus University Medical Center/Sophia Children’s Hospital, Rotterdam, The Netherlands

Marjan Kerkhof

Affiliation Department of Epidemiology, GRIAC Research Institute, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

Gerard H. Koppelman

Affiliation Department of Pediatric Pulmonology and Pediatric Allergology, GRIAC Research Institute, University Medical Center Groningen, Groningen, The Netherlands

Alet H. Wijga

alet.wijga@rivm.nl

Affiliation Centre for Prevention and Health Services Research, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands

Competing Interests

EvB is an employee of Danone Research. The other authors declare no competing interests exist. The present study was financially supported by Danone Research, Centre for Specialised Nutrition, Wageningen, The Netherlands. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SMW BB HAS EMV UG JCD MK GHK AHW. Analyzed the data: SMW. Wrote the paper: SMW AHW.