Department of Microbiology, Bacteriology and Serology Unit, Calcutta School of Tropical Medicine, C. R. Avenue, Kolkata-700 073, India;
Department of Physiology and Biophysics, KPC Medical College and Hospital, 1F Raja S C Mallick Road, Jadavpur, Kolkata-700 032, India;
Department of Microbiology, Bacteriology and Serology Unit, Calcutta School of Tropical Medicine, C. R. Avenue, Kolkata-700 073, India;
Department of Microbiology, Bacteriology and Serology Unit, Calcutta School of Tropical Medicine, C. R. Avenue, Kolkata-700 073, India;