Footnotes

• Contributors EC contributed in analysis, interpretation of data and in concept and design of the study. ME, VD and KM contributed in acquisition and interpretation of the data. OŞ and OÇ contributed in the revision of the study and final approval of the version to be published.

• Competing interests All authors have completed the ICMJE uniform disclosure form at http://www.icmje.org/coi_disclosure.pdf and declare: no support from any organisation for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous 3 years; no other relationships or activities that could appear to have influenced the submitted work.

• Patient consent Obtained.

• Ethics approval The patient has approved this report.

• Provenance and peer review Not commissioned; externally peer reviewed.