Author contributions:
Yasir Mahmood: Wrote the manuscript, literature review,
analysis and drafting.
Nazish Waris: Wrote the manuscript, literature review, analysis
and drafting.
Asher Fawwad: Edit and approved the manuscript
Abdul Basit: Edit and approved the manuscript
Conflict-of-interest statement: No potential conflicts of
interest. No financial support has been taken from any funding agency.