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About the article
Published Online: 2017-12-21
Published in Print: 2018-11-27
Conflict of interest: Authors state no conflict of interest.
Material and methods: Informed consent: Informed consent has been obtained from all individuals included in this study.
Ethical approval: The research related to human subject use has complied with all the relevant national regulations, and institutional policies, and is in accordance with the tenets of the Helsinki Declaration, and has been approved by the authors’ institutional review board or equivalent committee.
Disclosure of interest: The authors report no conflict of interest and full disclosure of interests are available to view online as supporting information.
Contribution to authorship: We can confirm that all the authors have made substantive intellectual contributions to the paper; they understand their role in taking responsibility and being accountable for the publication. CM gathered the results, analysed the data and wrote the paper. KE analysed the data, performed statistical analysis and reviewed the paper. HOC recruited all patients, assisted with data collection and reviewed the paper. BK and PBS assisted in the management of the study and reviewed the paper. PM, SC, FM and FNA conceptualised the work and reviewed the paper.