Financial sources
1. Grant funded by the National Science Center, Poland (no. 2014/13/N/NZ5/03671 [KN]), title: Molecular basis of isolated hearing loss in a group of Polish patients- using of Next Generation Sequencing to identify genes and mutations responsible for the hereditary form of the disease.
The funds were spent on research and on a fee for the grant manager and one assistant. Fee payment was not related to any commitments resulting in a potential or real conflict of interest related to the published manuscript.
2. Grant funded by the Mother and Child Institute (no. 510-18-07[KN]), title: Molecular basis of Usher syndrome- a comprehensive analysis of 10 genes in a group of Polish patients using Next Generation Sequencing (NGS).
The funds were spent on research only and were not related to any commitments resulting in a potential or real conflict of interest related to the published manuscript.
None of the funding institutions participated or influenced the collection and analysis of data.
We don’t have any patents, whether planned, pending or issued, broadly relevant to the work.
We have no conflicts of interest to disclose.
There are no other relationships/conditions/circumstances that present a potential conflict of interest connected with financial ties, academic commitments, personal relationships, political or religious beliefs and institutional affiliations.
Ethical approval
The study was approved by the Ethics Committee of the Mother and Child Institute and was carried out in accordance with The Code of Ethics of the World Medical Association (Declaration of Helsinki).
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all individual participants included in the study.