Author Contributions: Dr Jonklaas had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Jonklaas.
Acquisition of data: Jonklaas, Davidson,
Analysis and interpretation of data: Jonklaas, Soldin.
Drafting of the manuscript: Jonklaas,
Critical revision of the manuscript for important intellectual content: Jonklaas, Davidson, Bhagat, Soldin.
Statistical analysis: Jonklaas.
Obtained funding: Jonklaas, Soldin.
Administrative, technical, or material support: Jonklaas, Soldin.
Study supervision: Jonklaas, Davidson,
Financial Disclosures: None reported.
Funding/Support: This study was conducted through the General Clinical Research Center at Georgetown University and supported by grant M01-RR-023942-01 from the National Center for Research Resources (NCRR), a component of the National Institutes of Health (NIH). This study was also supported by grant K23 RR16524
from the NCRR (Dr Jonklaas) and partially supported by grant M01-RR-020359
from the NIH (Dr Soldin), and by Applied Biosystems/Sciex.
Role of the Sponsor: The role of the NCRR and NIH was to approve the relevant grant and provide funding for the study. Applied Biosystems/Sciex had no role in the design and conduct of the study, in the collection, management, analysis,
and interpretation of the data, or in the preparation, review, or approval of the manuscript.
Disclaimer: The contents of this article are solely the responsibility of the authors and do not necessarily represent the official views of NCRR or NIH.
Previous Presentation: Presented in part as a “Short Call” abstract at the 78th Annual Meeting of the American Thyroid Association; October 5, 2007; New York, New York.
Additional Contributions: We gratefully acknowledge the dedication of the General Clinical Research Center nursing staff and the generosity of the study participants, without which this study could not have been completed.