Sandhra Papparath Usman1, Sojan George Kunnathuparambil2, Deepti Ramakrishnan1, Joy Augustine1, Kundoly V Susheela3
1Department of Pathology, 2Department of Gastroenterology, 3Department of Microbiology, Amala Institute of Medical Sciences, Amalanagar, Thrissur-680555, Kerela, India.