Department of Immunology, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders, Dhaka, Bangladesh;
Department of Gastrointestinal Hepatobiliary and Pancreatic Diseases, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders, Dhaka, Bangladesh;
Department of Pathology, Ibrahim MedicalCollege, Dhaka, Bangladesh;
Laboratory Sciences Division, International Centre for Diarrhoeal Diseases Research, Bangladesh, Dhaka, Bangladesh;