1. Enteric Diseases Division, Central Research Lab, Kasturba Medical College, Manipal University, Manipal, Karnataka, India
2. Department of Medicine, Kasturba Medical College, Manipal University, Manipal, Karnataka, India
3. Department of Medicine, Dr. TMA Pai Hospital, MelakaManipal Medical College, Manipal University, Udupi, Manipal, Karnataka, India