1. Department of Gastroenterology and Hepatology, Kalinga Institute of Medical Sciences , Bhubaneswar 751024, India
2. Department of Gastroenterology, All India Institute of Medical Sciences , Bhubaneswar 751019, India
3. Department of Radiodiagnosis, All India Institute of Medical Sciences , Bhubaneswar 751019, India
4. Department of Pathology, Hi-Tech Medical College and Hospital , Bhubaneswar 751025, India