Published Online: January 19, 2015. doi:10.1001/jamapediatrics.2014.3052.
Study concept and design: Bembich, Bua, Demarini.
Acquisition, analysis, or interpretation of data: Bembich, Cont, Baldassi.
Drafting of the manuscript: Bembich, Bua, Demarini.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Bembich.
Administrative, technical, or material support: Cont, Baldassi.
Study supervision: Demarini.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grant NR.50/11 from the Institute for Maternal and Child Health, IRCCS Burlo Garofolo.
Role of the Funder/Sponsor: The funding source had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.