Pritish John Korula1, Rajasekar Arumugam1, Visali Jeyaseelan2, Rajat Ragunath3, Kandasamy Subramani1, Priscilla Rupali41Department of Surgical Intensive Care, 2Department of Biostatistics, 3Department of Colorectal Surgery, 4Department of Infectious Diseases, Christian Medical College and Hospital, Vellore, India.