Aarhus, Lisa
Tambs, Kristian
Hoffman, Howard J.
Engdahl, Bo
Funding for this research was provided by:
National Institutes of Health (N01-DC-6-2104)
Article History
Received: 30 June 2015
Accepted: 21 August 2015
First Online: 3 September 2015
Compliance with ethical standards
: The manuscript has not been submitted to more than one journal for simultaneous consideration. The manuscript has not been published previously (partly or in full). A single study is not split up into several parts to increase the quantity of submissions and submitted to various journals or to one journal over time. No data have been fabricated or manipulated (including images) to support your conclusions. No data, text, or theories by others are presented as if they were our own (“plagiarism”). Consent to submit has been received explicitly from all co-authors, as well as from the responsible authorities—tacitly or explicitly—at the institute/organization where the work has been carried out. Authors whose names appear on the submission have contributed sufficiently to the scientific work and, therefore, share collective responsibility and accountability for the results.
: The NTHLS, which is a part of HUNT, was funded by the National Institute on Deafness and Other Communication Disorders (NIDCD), NIH, research contract No. N01-DC-6–2104. The present study was supported by a grant from The Extra Foundation: Health and Rehabilitation through the member organization The National Association of Hard of Hearing. 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. All funding had followed the guidelines on good publication practice. There was independence between researchers and funders/sponsors. All authors declare that they have no conflicts of interest.
: The research is in compliance with the Norwegian Data Inspectorate and the Norwegian Regional Committee for Medical Research Ethics. We do not possess any person identifiable data. For all individual participants included in the study, informed consent was obtained. For this type of study, no formal consent is required.