Author contribution
H Kaurav: Conception and design of the work; drafting; final approval of the version. DN Kapoor: Acquisition of data, revising it critically for important intellectual content; final approval of the version. NK Upadhyay: Drafting the work; final approval of the version.
Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
No writing assistance was utilized in the production of this manuscript.