[1
]
Department of General Surgery, Postgraduate Institute of Medical Education and Research
(PGIMER), Chandigarh, 160012, India.
[2
]
Department of General Surgery, Postgraduate Institute of Medical Education and Research
(PGIMER), Chandigarh, 160012, India. kamanlil@yahoo.com.
[3
]
Department of Microbiology, Postgraduate Institute of Medical Education and Research
(PGIMER), Chandigarh, 160012, India.
[4
]
Department of Pharmacology, Postgraduate Institute of Medical Education and Research
(PGIMER), Chandigarh, 160012, India.