Accepted for Publication: October 19, 2014.
Published Online: December 29, 2014. doi:10.1001/jamapediatrics.2014.2898.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: Drummond.
Drafting of the manuscript: Collaco, McGrath-Morrow.
Critical revision of the manuscript for important intellectual content: All authors.
Administrative, technical, or material support: All authors.
Study supervision: McGrath-Morrow.
Conflict of Interest Disclosures: Drs Collaco and McGrath-Morrow have received funding from the American Academy of Pediatrics to study the health effects of e-cigarette exposure. No other disclosures were reported.