Author Contributions: Drs Gallagher and Hartnick had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Gallagher, Ference, Keamy, Hartnick.
Acquisition of data: Gallagher, Hill, Ojha, Keamy, Williams, Hansen, Collins, Setlur, Capra, Brigger, Hartnick.
Analysis and interpretation of data: Gallagher, Hill, Ojha, Maurer, Brigger.
Drafting of the manuscript: Gallagher, Ference, Collins, Setlur, Hartnick.
Critical revision of the manuscript for important intellectual content: Gallagher, Hill, Ojha, Ference, Keamy, Williams, Hansen, Maurer, Setlur, Capra, Brigger, Hartnick.
Statistical analysis: Ference, Maurer, Brigger, Hartnick.
Administrative, technical, or material support: Gallagher, Hill, Ference, Collins, Setlur, Capra.
Study supervision: Gallagher, Keamy, Brigger, Hartnick.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Hartnick reported receiving consultancy fees from Gyrus ACMI, receiving a grant from the National Institutes of Health to study voice disorders and voice therapy in children with vocal dysphonia, and receiving book royalties from Springer. No other authors reported any disclosures.
Disclaimer: The views expressed in this article are those of the authors and do not necessarily reflect the official policy or position of the US Department of the Navy, US Department of Defense, or the US government.
Additional Contributions: Michael Cunningham, MD (Boston Children's Hospital, Boston, Massachusetts), and Donna Neuberg, PhD (Harvard School of Public Health, Boston, Massachusetts), provided comments on the analysis of the manuscript; James Ware, PhD (Harvard School of Public Health, Boston, Massachusetts), provided comments on the design of the manuscript; and Christine Finn, PhD (Massachusetts Eye and Ear Infirmary, Boston, Massachusetts), Cheryl McNeal (Naval Medical Center, San Diego, California), Vanessa DeGuzman (Massachusetts Eye and Ear Infirmary, Boston, Massachusetts), and David Baxter (Harvard Vanguard Associates, Boston, Massachusetts) helped with the acquisition of data. Drs Cunningham, Ware, and Neuberg received no compensation and Dr Finn, Ms McNeal, Ms DeGuzman, and Mr Baxter were all compensated for their contributions.