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Article History

Received: 12 May 2020

Accepted: 12 August 2020

First Online: 17 August 2020

Compliance with ethical standards

:

: Vaibhav Singh, Ananda Kisor Pal, Dibyendu Biswas, Alakendu Ghosh, and Brijesh P Singh declare that they have no conflict of interest.

: The study was based on the thesis submitted for successful completion of the degree MS (Orthopaedics) from The West Bengal University of Health Sciences, Kolkata, India. The study was also approved by the Institutional Ethics Committee of IPGME&R and SSKM hospital, Kolkata.

: All the participants of the Case group and the Control group were explained the nature and scope of the study. They were made aware of all the requirements necessary to participate in the study. All participants signed a consent form before formal enrolment in the study.

: All authors, as well as their respective Departments and Institutions, agree to publish the findings of the study.

: Not applicable.

: Informed consent was obtained from all individual participants included in the study. Additional informed consent was obtained from all individual participants for whom identifying information is included in this article.

: The study was approved by the Institutional Ethics Committee of IPGME&R and SSKM hospital, Kolkata. The nature and scope of study and requirements for participation in the study was narrated to all the participants. All participants signed an informed written consent before enrolment in the study. 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.