1. Department of General Medicine, Dr. NTR University of Health Sciences, Vijayawada, Andhra Pradesh, India
2. Department of Gastroenterology and Hepatology, Mayo Clinic Rochester, 201 W. Center St. Rochester, MN 55902, USA
3. Department of Internal Medicine, Zaporozhye State Medical University, Ukraine
4. Department of General Surgery, Konaseema Institute of Medical Sciences and Research Foundation, Amalapuram, Andhra Pradesh, India
5. Department of General Medicine, Rangaraya Medical College, Kakinada, Andhra Pradesh, India
6. Department of General Surgery, Kakatiya Medical College, Warangal, Telangana, India