Footnotes

• Contributors AKS and STK provided the idea of the topic. AKS designed pro forma of audit and data collection sheet. AG collected the data and reviewed all the X-rays. STK and AKS performed statistical analysis. STK produced the initial draft of the manuscript in conjunction with AKS. All authors read, provided feedback and approved the final manuscript.

• Funding This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

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