1 Department of General Medicine, Patliputra Medical College & Hospital, Dhanbad, Jharkhand, India. Electronic address: chatterjeeaspiresubhankar.92@gmail.com.
2 Department of General Medicine, Patliputra Medical College & Hospital, Dhanbad, Jharkhand, India. Electronic address: ukojha58@gmail.com.
3 Department of General Medicine, Patliputra Medical College & Hospital, Dhanbad, Jharkhand, India. Electronic address: sanket.5479@gmail.com.
4 Surveillance Medical Officer, World Health Organization, Dhanbad, Jharkhand, India. Electronic address: tiwariam@who.int.