Transparency
Declaration of funding
No funding was received to produce this article.
Declaration of financial/other relationships
The author has 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.
Author contributions
The authors have contributed equally to the study design, performed data extraction, manuscript drafting and reviewing.
Acknowledgement
We would like to thank Prof. Mohammad A. Ghattas for reviewing the manuscript and providing insightful comments to improve its quality.