1. Department of Hepatology, Post Graduate Institute of Medical Education and Research, Chandigarh, India;
2. Department of Radiology, Government Medical College and Hospital, Chandigarh, India;
3. Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India;
4. Department of Radiodiagnosis, Post Graduate Institute of Medical Education and Research, Chandigarh, India.