1. Department of Radiodiagnosis, PGIMER, Chandigarh, India
2. Department of Physics, G.G.D.S.D. College, Chandigarh, India
3. I.K. Gujral P.T.U., Jalandhar, India
4. Department of Radiodiagnosis, AIIMS, New Delhi, India
5. Chitkara University, Punjab, India