1. From the E.N.T. Department, Hind Institute of Medical Sciences, Lucknow, India
2. Department of Forensic Medicine, Hind Institute of Medical Sciences, Lucknow, India
3. Division of Biochemistry, Department of Laboratory Medicine, Dr. Ram Manohar Lohia Hospital, New Delhi
4. Department of Otorhinolaryngology, Jawaharlal Nehru Medical College and Hospital, Amu Aligarh, India