1. Department of Microbiology, Amrita Institute of Medical Sciences, Ponekara, Kochi 682041, Kerala, India
2. Department of Marine Biology, Microbiology and Biochemistry, School of Marine Sciences, Cochin University of Science and Technology, Fine Arts Avenue, Cochin 682016, Kerala, India
3. Department of Gastrointestinal Surgery, Amrita Institute of Medical Sciences, Ponekara, Kochi 682041, Kerala, India