1 Rajendra Memorial Research Institute of Medical Science, Department of Epidemiology, Agamkuan, Patna, Bihar 800007, India. Electronic address: roshanktopno@yahoo.co.in.
2 Rajendra Memorial Research Institute of Medical Science, Department of Virology and Nanomedicine, Agamkuan, Patna, Bihar 800007, India.
3 Rajendra Memorial Research Institute of Medical Science, Department of Clinical Medicine, Agamkuan, Patna, Bihar 800007, India.
4 Rajendra Memorial Research Institute of Medical Science, Department of Pathology, Agamkuan, Patna, Bihar 800007, India.
5 Rajendra Memorial Research Institute of Medical Science, Department of Statics, Agamkuan, Patna, Bihar 800007, India.
6 Nalanda Medical College & Hospital, Department of Community Medicine, Agamkuan, Patna, Bihar 800007, India.
7 Rajendra Memorial Research Institute of Medical Science, Indian Council of Medical Research, Department of Molecular Biology, Agamkuan, Patna, Bihar 800007, India.