Published Online: August 19, 2013. doi:10.1001/jamapediatrics.2013.99.
Study concept and design: All authors.
Acquisition of data: Partty, Salminen, Isolauri.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Partty, Salminen, Isolauri.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Partty, Isolauri.
Obtained funding: Salminen, Isolauri.
Administrative, technical, or material support: Salminen, Isolauri.
Study supervision: Kalliomaki, Isolauri.
Conflict of Interest Disclosures: None reported.
Funding/Support: The study has been funded by the Foundation for Pediatric Research and an EVO grant from Turku University Hospital.
Trial Registration: clinicaltrials.gov Identifier: NCT00167700.
Additional Contributions: We thank the families participating in our study, Jaakko Matomaki, MSc, for statistical consultation, Robert MacGilleon, MA, for language review of the manuscript, and Johanna Hvitfelt-Koskelainen for help with the follow-up of participants.